Mining and Scientific Press

Mining and Scientific Press

4.11 - 1251 ratings - Source

We have killed, when we used the old headlight, as many as 13 at one time, and our claims for stock killed per month have ... have never killed a cow, and I am confident that the saving in stock claims alone will more than pay for the lights within the next two years. ... 1% to 2 tons per hour on Portland Cement, Quartz or Ores, depending on hardness of material to be pulverized and fineness of product.

Title:Mining and Scientific Press
Publisher: - 1894


You Must CONTINUE and create a free account to access unlimited downloads & streaming