E/MJ : engineering and mining journal . FIG. 2. METHOD FOR MAKING WELL WATER-TIGHT were sunk in this manner, without serious problems ofoperation arising. Fig. 1 presents a general sectional view of both sur-face and underground, and shows the general arrange-ment of the drilling equipment and the existing condi-tions at both places. Fig. 2 shows how the top ofthe well is made water-tight, when finished, in sucha manner that no water may get either in or out atthe collar of the well. September 6, 1919 Engineering and Mining Journal 399 Zinc for Roofing Used for That Purpose on New Plant of Cen
E/MJ : engineering and mining journal . FIG. 2. METHOD FOR MAKING WELL WATER-TIGHT were sunk in this manner, without serious problems ofoperation arising. Fig. 1 presents a general sectional view of both sur-face and underground, and shows the general arrange-ment of the drilling equipment and the existing condi-tions at both places. Fig. 2 shows how the top ofthe well is made water-tight, when finished, in sucha manner that no water may get either in or out atthe collar of the well. September 6, 1919 Engineering and Mining Journal 399 Zinc for Roofing Used for That Purpose on New Plant of CentralFoundry Co. at Joplin, Mo.—OtherNew Uses for Zinc Joplin CoRRESPONDENrE THE Central Foundry Co. of Webb City, Mo., lostits plant by fire about a year ago. A site wassecured in Joplin, and a new plant completed early H. T. Hornsby, president of the company,determined to try zinc for roofing, and decided upon aToof of sheet zinc, with standing seams to allow for the. Zl.\r KUUt ox CENTRAL FOUNDRY AT expansion and contraction of the metal. The seamsare about one inch in height, and the sheets are ap-proximately 12 ft. long and 18 in. wide. The new roofwas constructed by local tinsmiths, who had no previousexperience in working with zinc.
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
