@article{ref1,
title="Investigation of coal mining accidents",
journal="Journal - Forensic Science Society",
year="1979",
author="Collinson, J. L.",
volume="19",
number="1",
pages="9-17",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0015-7368",
doi="",
url="http://dx.doi.org/"
}