@article{ref1,
title="Underground Fire Prevention by the Anaconda Copper Mining Co",
journal="Transactions of the American Institute of Mining and Metallurgical Engineers",
year="1923",
author="Norris, EM",
volume="68",
number="",
pages="77-85",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0096-4778",
doi="",
url="http://dx.doi.org/"
}