Making lime on the farm

Making lime on the farm

4.11 - 1251 ratings - Source

... using 1-inch hexagonal steel and six-point star bits, with one man doing all the drilling, the speed was 17 feet per hour. ... The cost of machine drilling, not including depreciation on equipment, is usually much less than that of hand drilling.

Title:Making lime on the farm
Author:Nicholas Aloysius Kessler
Publisher: - 1938


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