@article{ref1,
title="Safer mine hoisting with conveyance position and load monitoring",
journal="American journal of industrial medicine",
year="1999",
author="Beus, M. J. and Iverson, S.",
volume="1999",
number="Suppl 1",
pages="119-121",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0271-3586",
doi="",
url="http://dx.doi.org/"
}