Drivage, development and support of roadways and faces in deep mines - 1,000 metres and over - and consequently in more difficult mining, geological and atmospheric conditions / transmitted by the Government of the Union of Soviet Socialist Republics.
1983
Details
Symbol[E/ECE/]COAL/GE.4/R.19/Add.11
TitleDrivage, development and support of roadways and faces in deep mines - 1,000 metres and over - and consequently in more difficult mining, geological and atmospheric conditions / transmitted by the Government of the Union of Soviet Socialist Republics.
AuthorsUSSR
DateGeneva :[...]
Description
4 p.