manway use in hard rock mining methods

  • Glossary of Mining Terms - Rock, Mineral and …

    Back — The roof or upper part in any underground mining cavity. Backfill — Mine waste or rock used to support the roof after coal removal. Barren — Said of rock or vein material containing no minerals of value, and of strata without coal, or containing coal in seams too thin to be workable. Barricading — Enclosing part of a mine to prevent …

  • Glossary of Mining Terms - Coal Education

    A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, …

  • Survey and GIS Spatial Data – FYFE

    In 2017 Sarah Constructions approached Fyfe to accurately survey the existing fence rails for the upgrade of the Adelaide Oval new LED Ribbon strip signage.

  • 英汉日科技词汇(An English-Chinese-Japanese …

    本词汇表版权为有限会社MSC所有,欢迎使用。 船舶配件贸易分类==> Main Ship Equipments | Equipment Types | Main Marine Manufacturers Ship Spare Parts, =1=A=B=C=D=E=F=G=H=I=J=K=L=M=N=O=P=Q=R=S=T=U=V=W=X=Y=Z= 女性肖像, by H. Nakajima | 燃料弁噴射テスト装置 | 油圧ポンプユニット | フラットソケット 化 …