Sentences with phrase «coal seams»

Scientists think that carbon dioxide could potentially be stored in three types of underground locations: depleted oil and gas fields, unminable coal seams and briny aquifers.

The Sixteen foot coal seams in the Powder River basin help a lot when elsewhere most are about four feet.

In fact, coal companies would better concentrate on extracting methane from coal seams and sink CO2 there, staying in business without coal extraction.

«Oil wells go dry and coal seams run out, but for the first time since the Industrial Revolution began we are investing in energy sources that can last forever.»

Groundwater methane in relation to oil and gas development and shallow coal seams in the Denver - Julesburg Basin of Colorado

Methane has also been seeping from marshes, bubbling out of oceans, leaking from coal seams and oil seeps and being released in huge quantities from volcanoes.

Coal companies are increasingly using this method because it allows for almost complete recovery of coal seams while reducing the number of workers required to a fraction of what conventional methods require.

Unfortunately for the exploration company the gas in the seams was not economically viable — not enough water or pressure in the seams or something like that (at the moment) as were the coal seams themselves given the shallower deposits already being exploited nearby.

In fact, he says, the oil sands, combined with Alberta's growing mania for extracting natural gas from coal seams by injecting toxic chemicals into the ground — thereby poisoning some of the dwindling supply of drinking water — threaten to create a parched, deforested, polluted wasteland.

(b) Workable coal seams.

Coal - bed methane is the gas found in coal seams.

-- If a well is drilled at a location where coal has been removed from one or more coal seams, the well shall be drilled and cased to prevent migration of gas or fluids into the seam from which coal has been removed in a manner prescribed by regulation of the department.

Coal companies in Appalachia are increasingly using this method because it allows for almost complete recovery of coal seams while reducing the number of workers required to a fraction of what conventional methods require.

Setting coal seams alight under two of our major Firths was always a reckless idea and today the Government has listened to communities and put an end to this risky industry.

Also in natural gas produced from coal seams.

Companies first clear - cut a mountaintop and then blast an average of 800 feet off the top of the mountain in order to access coal seams that lie beneath.

John, harvesting methane gas and from biosolids and converting it into clean energy fuel is not new, but today it has been reported that Australia's abundant methane gas reserves found in coal seams could help power the world.

The in situ process intends to utilise the insulative properties of coal combined with the controlled delivery mechanism of the high kinetic energy of water and catalysts (supplemented by natural catalysts / impurities located in all coal seams) to achieve liquefaction at a targeted 350 °C, thereby maximizing liquids production when compared to other coal liquefaction processes.

Mountaintop removal is a form of strip mining in which explosives are used to blast off the tops of mountains in order to reach the coal seams that lie underneath.

I suppose coal seams are also often only a few inches thick and prospectors will go to the trouble of blowing off mountaintops to get at the coal, yet that seems almost like a sane plan compared to what people have as pipe dreams for methane hydrates.

In Australia carbon dioxide could theoretically be sequestered in depleted oil or gas fields (not expected to be sufficiently depleted until 2030), deep underground unmineable coal seams, or deep saline aquifers.

Oil wells go dry and coal seams run out, but the earth's wind resources can not be depleted.

Gasification typically takes place in an above - ground gasification plant — however, the reaction can also take place below ground in coal seams.

Scientists have also found bacteria living thousands of feet deep in coal seams this completely throws off the C12 / C13 ratios of coal.

Mountaintop removal mining is one of the most destructive processes in the extractive industry: Peaks of mountains are literally blown to smithereens to access the coal seams within.

As mines become deeper or use coal seams in areas that have already been mined, the risk to mine workers will increase.

Obviously I haven't found any paleo - thermometers conveniently sticking out of said coal seams from which I could read at what temperatures they were formed (I'm sure there are geomarkers that are used as well as recent tree rings), but I currently see no such equivalent conditions on earth and I wonder how «climate scientists» (I always use quotation marks to indicate something I've seen printed elsewhere but don't believe myself) can have the gumption to assume we're currently living through the worst of times climate-wise.

And the coal seams of which I speak are not anomalies — they are found in abundance in certain time periods in the geologic column that indicate the earth was a much better greenhouse that it currently is.

Having worked in the coal industry as a geologist and mining engineer, I have considered some of those massive, exceptionally deep coal seams (some in the Powder River Basin get up to 80 feet thick) and I wonder how warm and luxurious it would have to be to support plantlife that would accumulate such massive amounts of carbon.

In addition, they ignore natural burning of fossil fuels including forest fires, long - burning coal seams and peat; as Hans Erren noted, fossil coal is buried wood.

The reserves are now defined as coal seams that are «economically exploitable».

At the mine, huge excavators called draglines clear loose earth from above black coal seams.

There are literally hundreds of burning coal seams in the world that add CO2 to the atmosphere.

Mountaintop removal is a radical form of coal mining in which up to 800 feet, sometimes more, of densely forested mountaintops are literally blown up to reach thin coal seams.

The coal industry practice of blasting off of mountain tops to get at coal seams is also under fire.

Billions of tonnes of carbon are held in coal seams, sequestered from the atmosphere over millions of years in a process that started in the carboniferous period several hundred million years ago.

Or coal seams?

The permit for Coal River Mountain's destruction was granted before the Obama administration began attempts to regulate the practice, and there was little chance to keep Massey from blasting the mountain's coal seams.

The situation reminds me of the uncontrolled fires burning in coal seams from Australia to Pennsylvania, which in 2001 were estimated to be releasing hundreds of millions of tons of carbon dioxide a year into the atmosphere.

Here's a Dot Earth «Postcard» from the outback — specifically from the Bimblebox Nature Refuge, a 20,000 - acre patch of drylands ecosystems in Queensland, Australia, whose owners are fighting a plan to mine surface and subterranean coal seams to supply China's relentless needs.

Here's the take - home section of the new paper, which uses the acronym MTM / VF for mountaintop mining and valley fill (the rock removed to expose coal seams is pushed into adjacent valleys):

He explained that an article I wrote in 2002 about fires, both natural and human caused, smoldering in coal seams around the world, inspired him, while he was completing a doctorate at the University of California, Berkeley, to switch from studying risks posed by smoldering combustion in spacecraft to those back on Earth.

Re: # 17 (Johnno): My understanding is that most of the coalbed methane being extracted and burned is from coal seams that are due to be mined in the next couple decades.

Could there be something different about the local source material — ocean plankton producing one kind of sediment exposed to the atmosphere, versus say peat bogs or coal seams being washed out upstream and delivering locally derived material directly to the sediment beds?

In Pennsylvania miners appropriated coal seams on company property and sold the ore for what they could get daily.

Scientists think that carbon dioxide could potentially be stored in three types of underground locations: depleted oil and gas fields, unminable coal seams and briny aquifers.

«This indicates that there are processes occurring — e.g. emissions from coal seams during the drilling process — that are not captured in the inventory development process,» he said.

What I'd like to know is, taking all of these factors into account, how much extra we, the consumers, will have to pay for a kilowatt - hour of coal - fired electricity 5, 10, 20 and 30 years from now (a point in time which even WV's own Nick Rahall says will be when the most productive coal seams have been mined out) because our leaders today decided to facilitate an increase in the consumption of coal through the laughably mis - named «climate bill.»

The top map, produced during the Civil War, shows the «oil district» of West Virginia, and includes locations of oil and gas wells, as well as coal seams.

The discovery of high levels of helium in UK coal seams could help scientists to monitor the secure recovery of coal or shale gas from underground sites.