Washington, D.C. Government Printing Office, 1918. First edition. Original Wraps. Small quarto, pp 225, indexed, illustrated with b/w photographs and drawings, several color plates, plus several fold-out reference illustrations in excellent condition. near fine. Item #19999
A history of the building and ornamental stone industry in Minnesota is summarized, the rocks and their constituent minerals are described, and an outline of the geologic history is given. A brief account of the properties essential to the usefulness of stones is followed by a general discussion of the crystalline rocks of Minnesota. Detailed descriptions of the quarries, of their products, mode of operation, equipment, ownership, and means of transportation, form the main body of the report. Undeveloped outcrops as well as quarries are described. Very rare.