Publication
STUDY OF THE POSSIBILITY OF MINING SUPPORTS
(Stef92 Technology, 2015-01-01, Martin Hummel)
Science and Technologies in Geology, Exploration and Mining2015
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THE EFFECT OF DEGASSING BOREHOLE INTO OLD MINE WORKINGS IN THE QUATERNARY OF METHANE CONTENT IN THE SOIL AIR
(Stef92 Technology, 2013-6-20, Martin Hummel)
Science and Technologies in Geology, Exploration and Mining2013