1101a#39;- would you proceed to lay out this work so as to have headgear, engines, and drum in true position a#39;I The surface is ordinary loose ground and stiff clay for a ... A hydraulic ram is used for raising the cage for double decking at the bottom of a shaft 560 feet deep. ... State the details to bc observed in taking samples of coal n a mine for analysis. ... It is found necessary to seal off two goavcs, one of which contains large volumes of CH* and EN other is giving E¾E¹ blackdamp freely.
|Title||:||Annual Report of the Department of Mines, New South Wales|
|Author||:||New South Wales. Dept. of Mines|