The chemical compound is used for oil extraction but can damage refining equipment.

Several proposed Alberta oil extraction sites have been approved but are not going forward.

In energy, Elseco insures oil extraction and downstream services such as transportation and refineries.

Environmental concerns over fracking may cast a shadow over the development of tight oil extraction.

The Green Party opposes continued investment in oil extraction because of its link to climate change.

Methane, the main component of commercially distributed natural gas, is also a byproduct of oil extraction.

Pollution is a major problem The Caspian Sea has long suffered pollution from oil extraction and other industries.

Depending on what finally happens, Congress' efforts could reshape the future of deep-water oil extraction in the Gulf.

But it is not just the traditional, grubby business of oil extraction that stands to make a mint.

Mining production in July was depressed by Hurricane Barry, which disrupted oil extraction in the Gulf of Mexico.

Rapeseed pellet - crushed seed residue from oil extraction is a by-product of fatty acid methyl esters production process.

Tells about a mammoth shale oil extraction venture that Kirkland is very excited about since it will provide employment.

Few people put what they were saying together with the smelly and ubiquitous oil extraction going on around them.

Its portfolio of products includes animal health products, pellet feeds, processed and further processed chicken products and solvent oil extraction.

Photo: 123rf.com Chris Nathan plans to build five coconut oil extraction plants around the region to meet expanding market demand.

Edward Burtynsky's work, for example, reflects the human impact on the natural environment through such activities as oil extraction or quarrying.