@article{ref1,
title="On the mining district of Cornwall and West Devon",
journal="Proceedings of the institution of mechanical engineers",
year="1873",
author="Collins, J. Henry",
volume="24",
number="1",
pages="89-118",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0020-3483",
doi="10.1243/PIME_PROC_1873_024_013_02",
url="http://dx.doi.org/10.1243/PIME_PROC_1873_024_013_02"
}