Deep ice tells long climate story
September 6, 2006 at 6:29 am | In earth science, ecology, global warming | 1 CommentThis story is comfirming (yes, again) the deep shit we’re in. But it is now 800,000 years of proof instead of 600k.
Also, this article makes it quite clear– to those of us who aren’t scientists who fall alseep with too much jargon– HOW we know.
/s/ Andrew
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By Jonathan Amos
Science reporter, BBC News, Norwich
2006/09/04
Carbon dioxide levels are substantially higher now than at any time in the last 800,000 years, the latest study of ice drilled out of Antarctica confirms.
The in-depth analysis of air bubbles trapped in a 3.2km-long core of frozen snow shows current greenhouse gas concentrations are unprecedented.
The East Antarctic core is the longest, deepest ice column yet extracted.
Project scientists say its contents indicate humans could be bringing about dangerous climate changes.
“My point would be that there’s nothing in the ice core that gives us any cause for comfort,” said Dr Eric Wolff from the British Antarctic Survey (BAS).
“There’s nothing that suggests that the Earth will take care of the increase in carbon dioxide. The ice core suggests that the increase in carbon dioxide will definitely give us a climate change that will be dangerous,” he told BBC News.
The Antarctic researcher was speaking here at the British Association’s (BA) Science Festival.
Slice of history
The ice core comes from a region of the White Continent known as Dome Concordia (Dome C). It has been drilled out by the European Project for Ice Coring in Antarctica (Epica), a 10-country consortium.
The column’s value to science is the tiny pockets of ancient air that were locked into its millennia of accumulating snowflakes.
Each slice of this now compacted snow records a moment in Earth history, giving researchers a direct measure of past environmental conditions.
Not only can scientists see past concentrations of carbon dioxide and methane – the two principal human-produced gases now blamed for global warming – in the slices, they can also gauge past temperatures from the samples.
This is done by analysing the presence of different types, or isotopes, of hydrogen atom that are found preferentially in precipitating water (snow) when temperatures are relatively warm.
‘Scary’ rate
Earlier results from the Epica core were published in 2004 and 2005, detailing the events back to 440,000 years and 650,000 years respectively. Scientists have now gone the full way through the column, back another 150,000 years.
The picture is the same: carbon dioxide and temperature rise and fall in step.
“Ice cores reveal the Earth’s natural climate rhythm over the last 800,000 years. When carbon dioxide changed there was always an accompanying climate change. Over the last 200 years human activity has increased carbon dioxide to well outside the natural range,” explained Dr Wolff.
The “scary thing”, he added, was the rate of change now occurring in CO2 concentrations. In the core, the fastest increase seen was of the order of 30 parts per million (ppm) by volume over a period of roughly 1,000 years.
“The last 30 ppm of increase has occurred in just 17 years. We really are in the situation where we don’t have an analogue in our records,” he said.
Natural buffer
The plan now is to try to extend the ice-core record even further back in time. Scientists think another location, near to a place known as Dome A (Dome Argus), could allow them to sample atmospheric gases up to a million and a half years ago.
Some of the increases in carbon dioxide will be alleviated by natural “sinks” on the land and in the oceans, such as the countless planktonic organisms that effectively pull carbon out of the atmosphere as they build skeletons and shell coverings.
But Dr Corinne Le Quéré, of the University of East Anglia and BAS, warned the festival that these sinks may become less efficient over time.
We could not rely on them to keep on buffering our emissions, she said.
“For example, we don’t know what the effect will be of ocean acidification on marine ecosystems. There is potential for deterioration,” she explained.
More CO2 absorbed by the oceans will raise their acidity, and a number of recent studies have concluded that this will eventually disrupt the ability of marine micro-organisms to use the calcium carbonate in the water to produce their hard parts.
Story from BBC NEWS:
http://news.bbc.co.uk/go/pr/fr/-/1/hi/sci/tech/5314592.stm
Published: 2006/09/04 22:27:27 GMT
© BBC MMVI
Busiest Hurricane Season on Record Ends
November 30, 2005 at 11:14 pm | In ecology | 1 CommentBy JENNIFER BAYOT
The busiest hurricane season on record ends today with 26 named storms, including a tropical system that formed on Tuesday over the central Atlantic.
At 4 p.m. Eastern time, the center of Tropical Storm Epsilon was about 650 miles southeast of Bermuda and turning slightly south at a rate of 7 miles per hour. Forecasters at the National Hurricane Center expect it to stay well off the coast, though it will continue sending heavy surf and rough waves around the island as it rakes the ocean with tropical-storm-force winds 220 miles from its center.
The storm’s maximum sustained winds have gained strength, reaching about 70 m.p.h. from 50 m.p.h. on Tuesday. Though the storm could briefly intensify into a hurricane on Thursday, it should gradually weaken later in the day or on Friday as it slowly turns north or northeast, allowing it to dissipate in the ocean. The next updated of the storm’s whereabouts is due at 10 p.m.
That forecasters would be tracking yet another named storm on Nov. 30 is a fitting end to the most active hurricane season logged in the record books.
“This hurricane season shattered records that have stood for decades-most named storms, most hurricanes and most Category 5 storms,” the undersecretary of commerce for oceans and atmosphere, retired Vice Adm. Conrad C. Lautenbacher Jr., said in a statement issued by the National Oceanic and Atmospheric Administration. “Arguably, it was the most devastating hurricane season the country has experienced in modern times.”
But NOAA, which operates the National Weather Service, also warned that the busy season was part of “a trend likely to continue for years to come,” extending an active hurricane cycle that began in 1995. The increase in the number and intensity of tropical storms and hurricanes can span multiple decades, NOAA said, stimulated by low wind shear and warmer-than-average surface temperatures in the Atlantic Basin, among other factors.
“I’d like to foretell that next year will be calmer, but I can’t,” Admiral Lautenbacher said. “Historical trends say the atmosphere patterns and water temperatures are likely to force another active season upon us.”
Of the 26 named storms that have formed since June 1, half have been hurricanes, and more than half of those were major hurricanes, with a rating of Category 3 or higher, according to data posted on NOAA’s Web site, www.noaa.gov. The parade of strong storms even exhausted the list of names reserved for the season, leading to the use of the Greek alphabet after Hurricane Wilma struck.
“The Atlantic Basin produced the equivalent of more than two entire hurricane seasons over the course of one,” the director of the National Weather Service, retired Brig. Gen. David L. Johnson of the Air Force, said.
U.S. researchers studying global climate change say hotter temperatures are melting glaciers will have a detrimental effect on the environment and economy.
November 30, 2005 at 1:42 am | In earth science, ecology | Leave a CommentThey say the affect of melting polar ice caps and glaciers worldwide will increase over the upcoming decades, according to even the most conservative estimates, The Christian Science Monitor reports.
A team of scientists from Scripps Institution of Oceanography looked at the affect on the Rhine River in Europe and on Canadian prairies and found it mirrored what was happening in the western United States.
They found farmers were more at risk of drought and shipments of goods on the waters would be reduced.
A Chinese study found glaciers in the Himalayas and Hindu Kush mountains have been dramatically getting smaller over the past 25 years.
Researchers at the U.S. Geological Survey and the National Oceanic and Atmospheric Administration looked at 12 climate change models to estimate how the extra water — and fewer glaciers — would affect the world.
It found a 10 to 40 percent increase in water flows in parts of Africa, Eurasia and North and South America and a 10 to 30 percent decline in Southern Africa and Europe, the Middle East and western North America.
Copyright 2005 by United Press International
A study published Thursday shows global warming is taking a toll on the world — 150,000 deaths annually — mostly in underdeveloped countries. And the number could double in 25 years.
November 29, 2005 at 1:18 am | In earth science, ecology | Leave a CommentData collected by the two groups is published in the journal Nature.
Professor Jonathan Patz of the university’s Gaylord Nelson Institute for Environmental Studies and the lead author of the Nature study, said the ones most affected by global warming are those who did nothing to cause it.
Hit the worst are poor people on the Asian, South American Pacific and Indian Ocean coasts as well as those in sub-Saharan Africa — areas vulnerable to extreme climate shifts and where diseases get a boost from upturns in temperature.
This week Howard Frumkin, the director of the National Center for Environmental Health at the Centers for Disease Control and Prevention called global warming “a significant global health challenge,” an about face for the Bush administration that has previously dismissed the trend.
Copyright 2005 by United Press International
The impact of spiralling pollution on the planet poses a threat to civilisation just as catastrophic as much-vaunted weapons of mass destruction, Britain’s top scientist warned.
November 29, 2005 at 1:15 am | In earth science, ecology | Leave a CommentRobert May, president of the country’s leading scientific body, the Royal Society, issued the warning as a 12-day conference was set to get underway Monday in Montreal to decide the fate of the Kyoto Protocol, the United Nations’ troubled treaty for curbing greenhouse gases.
“The impacts of global warming are many and serious: sea-level rise … changes in availability of fresh water … and the increasing incidence of extreme events — floods, droughts, and hurricanes — the serious consequences of which are rising to levels which invite comparison with weapons of mass destruction,” May said in an advance copy of a speech released Monday to coincide with the start of the UN Framework Convention on Climate Change on the same day.
The Montreal meeting is the first by the convention since the UN’s pollution-cutting Kyoto Protocol, signed by 156 countries, took effect on January 16.
But a notable non-signatory of the pact committing industrialised nations to reducing or offsetting emissions of carbon dioxide and five other greenhouse gases is the planet’s heaviest polluter: the United States.
Observers are gloomy about the prospects of the Montreal round coming up with a post-2012 deal that satisfies the European Union, green groups, business and US President George W. Bush, who argues Kyoto penalises the oil-dependent US economy.
But May said the convention attended by up to 10,000 delegates from 180 countries could help by agreeing to a pollution analysis calculating the potential costs of corrective action — and the fallout if nothing was done.
“The Montreal meeting could be constructive if there at least emerged agreement to initiate a study of target levels for atmospheric concentrations, as a basis for discussing appropriate plans of action,” he said.
“We need countries to initiate a study into the consequences of stabilizing greenhouse gas concentrations at, below, or above twice pre-industrial levels, so that the international community can assess the potential costs of their actions or lack of them.
“Such an analysis could focus the minds of political leaders, currently worried more about the costs to them of acting now than they are by the consequences for the planet of acting too little, too late,” May said.
The scientist pointed to Hurricane Katrina, which devastated the US jazz capital of New Orleans in August, as an example of what could happen more often if politicians failed to tackle global warming.
Studies undertaken before the storm suggested rising sea temperatures would mean more severe hurricanes, May said.
“The estimated damage inflicted by Katrina is equivalent to 1.7 percent of US GDP this year, and it is conceivable that the Gulf Coast of the US could be effectively uninhabitable by the end of the century,” he said.
May is set to deliver his last address of his five-year term as the head of the Royal Society on Wednesday.
The sky may not be falling – as Chicken Little originally thought – but it sure is warmer
November 25, 2005 at 10:54 pm | In earth science, ecology | Leave a CommentThird Warmest Year In a Row
James Hansen of NASA GISS analyzed the data and said that the 2004 average temperature at Earth’s surface around the world was 0.48 degrees Celsius or 0.86 Fahrenheit above the average temperature from1951 to 1980.
The Warming Trend of Global Surface Temperatures: Trends of annual surface temperature relative to 1951-1980 mean: the global mean is on the top and the global-plus-local means on the bottom. The top panel shows that globally the warmest temperature occurred in 1998 (highest black dot on the top right), while the second and third warmest years were 2002 and 2003, respectively. As the figure shows, there has been a strong warming trend over the past 30 years, a trend shown to be due primarily to increasing greenhouse gases in the atmosphere. Credit: NASA
Globally, 1998 has proven to be the warmest year on record, with 2002 and 2003 coming in second and third, respectively. “There has been a strong warming trend over the past 30 years, a trend that has been shown to be due primarily to increasing greenhouse gases in the atmosphere,” Hansen said.
Global temperatures vary from year to year and place to place, but weather stations and satellite data provide accurate records. By recording them over time, scientists develop a record of the climate, and have been able to see how it’s been changing.
Some of the changes in climate are due to short-term factors like large volcanic eruptions that launched tiny particles of sulfuric acid into the upper atmosphere (stratosphere) in 1963, 1982, and 1991. These natural events can change climate for periods of time ranging from months to a few years. Other natural events, like El Ninos, when warm water spreads over much of the tropical Pacific Ocean, also have large short-term influences on climate. The large spike in global temperature in 1998 was associated with one of the strongest El Ninos of recent centuries, and a weak El Nino contributed to the unusually high 2002-2003 global temperatures.
Even though big climate events like El Nino affect global temperatures, the increasing role of human-made pollutants plays a big part. Scientists, like Hansen, have been working to try and predict how human impacts on our climate will affect the annual world temperature trends in the future.
Hansen also said that now, Earth’s surface absorbs more of the Sun’s energy than gets reflected back to space. That extra energy, together with the weak El Nino, is expected to make 2005 warmer than the years of 2003 and 2004 and perhaps even warmer than 1998, which had stood out as far hotter than any year in the preceding century
Another interesting note is that global warming is now large enough that it is beginning to affect seasons, and make them warmer than before on a more consistent basis.
Compared to the average temperatures from the 1951 to 1980 period, the largest unusually warm areas over all of 2004 were in Alaska, near the Caspian Sea, and over the Antarctic Peninsula. But compared to the previous five years, the United States as a whole was quite cool, particularly during the summer.
For the original article by Drs. James Hansen and Makiko Sato, please visit on the Internet: http://www.giss.nasa.gov/data/update/gistemp/2004/
Source: NASA
Deffeyes is one of the more pessimistic of the prognosticators. If he is correct, the global oil peak will just have occurred when he presents his Caltech lecture on December 1. Afterward, the commodity will become more and more scarce–and therefore more and more expensive and hard to obtain. The end result will be massive economic and social disruptions in a 21st-century world that has fueled itself for decades with cheap and plentiful energy.
November 24, 2005 at 3:35 pm | In earth science, ecology, global economics and politics, oil | Leave a CommentOil Expert To Address Theory That Peak Oil Has Arrived
Deffeyes is one of the more pessimistic of the prognosticators. If he is correct, the global oil peak will just have occurred when he presents his Caltech lecture on December 1. Afterward, the commodity will become more and more scarce–and therefore more and more expensive and hard to obtain. The end result will be massive economic and social disruptions in a 21st-century world that has fueled itself for decades with cheap and plentiful energy.
Deffeyes has spent a lifetime in the oil business and the academic study of petroleum. Born in the middle of an Oklahoma City oilfield to a pioneering petroleum engineer, Deffeyes joined the Shell research lab in Houston after graduate school. At Shell he was a colleague of M. King Hubbert, who was the first person to predict that production peaks were even possible.
Hubbert’s prediction that U.S. oil production would peak around 1970 was at first laughed at by industry analysts, but was later taken quite seriously when domestic production indeed peaked in much the manner that he had forecasted. Experts then realized that the entire planet would eventually reach a production peak, and that the effects would be highly disruptive.
Deffeyes joined the Princeton faculty in 1967 and continued to be involved in the oil industry as a consultant and expert witness. After his retirement in 1998, he published two books on the subject, Hubbert’s Peak and Beyond Oil.
His prediction that the global oil peak will occur at Thanksgiving comes with stern warnings that severe consequences are to be expected for transportation and agriculture. In fact, he advises that the possibility of a “soft landing” may have already passed.
Ken Deffeyes will discuss the evidence supporting his theory at the Lauritsen Memorial Lecture, to take place at 8 p.m. on Thursday, December 1, in Beckman Auditorium on the California Institute of Technology campus.
The Lauritsen Memorial Lecture at Caltech commemorates two former professors of physics at Caltech, Charles C. and Thomas Lauritsen. Together, they served the Institute for more than 68 years, playing a significant role in Caltech’s development and accomplishments.
Source: Caltech
things that make you go “hmmmmm”….. As of today, the Goldman Sachs Group is officially green.
November 23, 2005 at 12:42 am | In ecology | Leave a CommentGoldman to Encourage Solutions to Environmental Issues
The big investment banking firm has announced a policy that details how its 24,000 employees – be they bankers, analysts or purchasing agents – should promote activities that protect forests and guard against climate change.
Goldman, which counts paper companies, refiners and car companies among its clients, stopped short of saying it would reject clients with questionable environmental practices. Instead, it said it would “encourage” clients in “environmentally sensitive” areas to use “appropriate safeguards.”
It committed itself to investing $1 billion in projects that generate energy from sources other than oil and gas. And it strongly endorsed stringent federal regulation.
Goldman said it would establish a Center for Environmental Markets to study how the free-market system can solve environmental problems. Henry M. Paulson Jr., Goldman’s chairman, said the center – which will cost $5 million to set up and will be operating within six months – would help shape public policy.
“We don’t have a lot more time to deal with climate change,” said Mr. Paulson, an outspoken environmentalist who is also chairman of the Nature Conservancy. “We need the right balance between regulation and market-based approaches.”
Goldman is not the first financial services firm to adopt an environmental policy. In response to a 2003 campaign led by the Rainforest Action Network, more than 30 commercial banks signed the Equator Principles, which call for them to assess environmental risk before financing a project.
This year, J. P. Morgan Chase set out strict environmental dos and don’ts for each part of its business. And Merrill Lynch now includes environmental issues in the due-diligence checklist its bankers use before underwriting stock issues.
But environmental advocates say that the Goldman policy keeps going where others leave off.
“They are spending intellectual capital and energy on finding market-based solutions to environmental problems,” said Michelle Chan-Fishel, program manager for green investments at Friends of the Earth.
Jonathan Lash, president of the World Resources Institute, was more blunt. “Goldman has given us things to measure them by,” he said.
The Goldman policy is certainly the most explicit. J. P. Morgan calls for public policy that “establishes certainty for investors and allows significant investments in greenhouse gas emissions.” Goldman endorses a “strong policy framework that creates long-term value for greenhouse gas emissions reductions and consistently supports and incentivizes the development of new technologies that lead to a less carbon-intensive economy.”
Goldman, which already owns wind farms and power plants and recently contributed land for a protected forest in Chile, has also set such quantifiable goals as reducing greenhouse gases from its office buildings by 7 percent by 2012 and developing uniform green building standards for all its properties.
It has pledged to increase its activities in carbon trading, which grants companies the right to emit set quantities of carbon dioxide and sell the rights if they emit less than allowed. It has also committed its equity research department to do extensive environmental studies.
“Goldman is expressly acknowledging the financial risks of investing in a company with weak environmental performance,” said Michael J. Brune, executive director for Rainforest Action Network.
Goldman said it would insist that its own buildings be constructed of certified wood – wood that was not illegally logged – and would “prefer” to finance forestry projects that have been similarly certified. Similarly, it said, it would “prefer” to finance projects in which the local communities were consulted.
“It is not our job to dictate to clients what they must do,” Mr. Paulson said. “We won’t finance projects that damage the environment, but we won’t refuse to underwrite your security or handle your merger because you are not as environmentally strong as we would like.”
Environmentalists wince at some of the omissions, but concede that no bank has pledged to shun clients on environmental grounds.
“We can’t expect unilateral disarmament,” said Eileen Claussen, president of the Pew Center on Global Climate Change. “If Goldman works to get stricter federal policies, and if it disseminates its research to clients and policy makers, the issue may be rendered moot anyway.”
Private companies and individuals would be able to buy large tracts of federal land, from sagebrush basins to high-peak hiking trails around the West, under the terms of the spending bill passed Friday by a two-vote margin in the House of Representatives.
November 20, 2005 at 1:52 am | In domestic politics, ecology | Leave a CommentBill Authorizes Private Purchase of Federal Land
DENVER, Nov. 19 – Private companies and individuals would be able to buy large tracts of federal land, from sagebrush basins to high-peak hiking trails around the West, under the terms of the spending bill passed Friday by a two-vote margin in the House of Representatives.
On the surface, the bill reads like the mundane nip and tuck of federal mining law its authors say it is. But lawyers who have parsed its language say the real beneficiaries could be real estate developers, whose business has become a more potent economic engine in the West than mining.
Under the existing law, a mining claim is the vehicle that allows for the extraction of so-called hard-rock metals like gold or silver.
Under the House bill passed Friday, for the first time in the history of the 133-year-old mining law individuals or companies can file and expand claims even if the land at the heart of a claim has already been stripped of its minerals or could never support a profitable mine. The measure would also lift an 11-year moratorium on the passing of claims into full ownership.
The provisions have struck fear through the West, from the resort areas of the Rockies like Aspen and Vail here in Colorado, to Park City in Utah, which are all laced with old mining claims. Critics say it could open the door for developers to use the claims to assemble large land parcels for projects like houses, hotels, ski resorts, spas or retirement communities.
And some experts on public land use say it is possible that energy companies could use the provision to buy land in the energy-rich fields of Wyoming and Montana on the pretext of mining, but then drill for oil and gas.
“They are called mining claims, but you can locate them where there are no minerals,” said John D. Leshy, who was the Interior Department’s senior lawyer during the Clinton administration. Mr. Leshy said the legislation “doesn’t have much to do with mining at all.”
“It has to do with real-estate transfer for economic development,” he said.
But supporters of the bill, including Representative Jim Gibbons, Republican of Nevada, argue that critics like Mr. Leshy are missing the point of the legislation, and that allowing more mine-claim lands to be purchased would be an economic boon to rural communities that often struggle in the boom and bust cycle of mining. “Not only is this rhetoric false, it is an affront to the rural American families whose livelihoods depend on sustained economic development,” Mr. Gibbons said in a written statement.
Debate over the bill, with its echoes of the West’s old and thorny relationship with mining, has created some strange bedfellows. In Montana, hunting and fishing groups have rallied to fight the measure, fearing that it could reduce public access to treasured trout streams. The Jewelers of America, a trade group for retailers, has denounced it as well, fearing a backlash by consumers.
In Colorado, one question centers on the “fourteeners,” as the state’s string of 14,000-foot peaks are known. Public access to three of the peaks about two hours from Denver was closed this summer by owners of mining claims who – unbeknownst to most hikers – control sections of popular trails to the summits. Hiking groups are concerned that if those sections can be expanded by the owners, many more mountains could be closed.
Many major environmental groups, meanwhile, seemed distracted during the buildup to Friday’s vote, though some, like the Wilderness Society and Earthworks, lobbied heavily against the changes in the mining law.
But with limited political capital to spend, many of the groups concentrated this fall on getting Republican support for eliminating from the House version of the spending bill those provisions that would have opened the Arctic National Wildlife Refuge, known as ANWR, to energy exploration.
The Sierra Club and other lobbying groups were successful in that battle and on another provision that would have allowed new offshore drilling. But their credit was apparently used up when the mining provisions arose.
“You got 22 Republicans to fall on their swords on ANWR,” said Richard Hoppe, the communications director of the Izaak Walton League of America, a fisherman’s group. “Those 22 are unlikely to fall on their swords for mining.”
Gauging the impact of the bill, however – and the volume of transfers that may occur – is a complete guess, most land experts say. In some cases, lawyers say the current language in the bill, which is likely to be altered somewhat by a House-Senate conference committee, is vague and would almost certainly lead to court challenges.
Environmental groups, looking to the database of mining claims created by their colleagues at the Environmental Working Group, say private owners could gain title to 5.7 million acres of federal forests, rocky promontories and grasslands.
The bill’s supporters put the number at a minimum of 360,000 acres, but do not include in that figure claims that expand the boundaries of current private holdings.
But none of that diminishes the anxiety in places like Pitkin County, Colo., where some of the nation’s wealthiest people live on the steep mountain slopes of Aspen, and where a vacant lot can easily sell for $2 million. There the House bill is perceived as a direct threat to the green and cosseted open-space lifestyle that is the community’s pride.
“Aspen is surrounded by mining claims,” said Dorothea Farris, a member of the county commission, which sent a letter to Colorado’s Congressional delegation earlier this week denouncing the bill as a “devastating” threat. “You come down the ski slope, and the face of the mountain you see, Smuggler Mountain, is all old mine claims. We have tried to protect wildlife and open space, and this will fragment it.”
Mining claims are strange legal beasts, rooted in the frontier era of homesteading and largely unchanged by the passing of the years. In most other countries, a miner petitions the government for permission to mine on public lands.
But under the General Mining Law of 1872, which underpins the House bill, people or companies can essentially raise a hand and declare that the silver or gold or copper under the earth is theirs. The claim is then considered a legally defensible right, though since 1994 Congress has barred claims from passing to full legal ownership, a process called patenting. The House bill would end that moratorium.
Mr. Leshy, the former Interior Department lawyer, and other experts say that perhaps 300 million acres of public land – almost all of it in the West – remains open to the filing of mining claims. And while the House bill appears to exempt specifically any new mining in national parks and wilderness areas from conversion of claims into ownership, other land experts say the issue is less certain because of language elsewhere in the bill that says claimants with “valid existing rights” may now be able to exercise those rights to patent their claims.
“What does ’subject to valid existing rights’ mean?” asked Mat Millenbach, who oversaw public lands in Montana as the director of the Federal Bureau of Land Management until his retirement in 2002. “To me it means if you have a valid claim, say in Death Valley National Park, I would claim it’s a valid existing right, and I would take it to patent.”
An executive branch lawyer and geologist advising Republicans on the House Resources Committee said anxiety about the bill was overstated because the hurdles for proving a mine claim and moving on to full ownership remained high.
People or companies filing for or buying mining claims would have to prove that the land contained mineral deposits, though they would no longer have to show that these could be mined at a profit, said the lawyer, who spoke on condition of anonymity because he is not authorized to speak to the press.
Since mineral deposits are relatively scarce, he added, the amount of land involved would also be modest – certainly, he insisted, not the millions of acres the bill’s opponents claim.
Mining industry officials said that if the new owners were then to use a mine claim for other purposes, say for building condominiums, the Interior Department could file a lawsuit to revoke the transaction as a deal done under false pretenses.
“They’d have to be willing to defraud the U.S. government,” said Carol Raulston, a spokeswoman for the mining industry’s trade group, the National Mining Association.
How often such challenges by the federal government arise is another question. The executive branch lawyer acknowledged that such suits by the Interior Department or Forest Service were relatively rare, but he said that if a mining claim was bought “and in a year you turn around and have a ski area, you’re going to have someone’s undivided attention over in the inspector general’s office.”
The bill has still left some Western congressmen, like Dennis R. Rehberg, Republican of Montana, in the hot seat. After a coalition of sporting and fishing groups in his state condemned the bill earlier this week, Mr. Rehberg agreed that he did not like the mining provisions either but might have to vote for the larger budget bill anyway.
Mr. Rehberg’s office then issued a letter from the sponsor of the provisions, Representative Richard W. Pombo, Republican of California, the chairman of the House Resources Committee. Mr. Pombo promised in writing that he would work in the conference committee to make sure that language protecting recreational access was added.
Sporting groups, nonetheless, remained unsatisfied.
“How are you going to protect hunting and fishing access opportunities and the diverse wildlife that exists on our public lands if it is no longer in public hands?” asked Craig Sharpe, the executive director of the Montana Wildlife Federation, a hunting and fishing group.
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