A new technique for grouting old mine workings

Mining Science and Technology - Tập 11 - Trang 199-206 - 1990
E.J. Kipko1, A.E. Kipko1
1Specialized Agency on Grouting and Geological Services, 7a Petrovski st., 349240, Antratsit, Voroshilovgrad Region (U.S.S.R.)