@article{ref1,
title="On the improvements and progress in the working and ventilation of coal mines in the Newcastle-on-Tyne District within the last fifty years",
journal="Proceedings of the institution of mechanical engineers",
year="1858",
author="",
volume="9",
number="1",
pages="177-236",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0020-3483",
doi="10.1243/PIME_PROC_1858_009_024_02",
url="http://dx.doi.org/10.1243/PIME_PROC_1858_009_024_02"
}