@article{ref1,
title="Underground coal mining injury: A look at how age and experience relate to days lost from work following an injury",
journal="Safety science",
year="2010",
author="Margolis, Katherine A.",
volume="48",
number="4",
pages="417-421",
abstract="Coal has been mined in the United States since colonial times and coal mining has always been a dangerous occupation. Despite the dangers involved in coal mining, coal is essential to the functioning of our society. Coal provides energy for products, businesses, and homes. <p />",
language="en",
issn="0925-7535",
doi="10.1016/j.ssci.2009.12.015",
url="http://dx.doi.org/10.1016/j.ssci.2009.12.015"
}