@article{ref1,
title="Safety and health of heavy equipment operators at Ground Zero",
journal="American journal of industrial medicine",
year="2002",
author="Lippy, Bruce E.",
volume="42",
number="6",
pages="539-542",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0271-3586",
doi="10.1002/ajim.10152",
url="http://dx.doi.org/10.1002/ajim.10152"
}