Bisbee daily review., 1909-05-23
Courtland Timesl

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 Work on the first thre compartment saaft for Courtland was started Wei- nesday morning bright and-early. The Great Western Copper Mining com pany have mad in mind this move ment toward further development of the camp for some time and Tuesday night the word was given to begin ac- tive operations the next morning. The shaft is located on the Mamie claim at the head of Main street. directly at the upper end of the patented ground Of the Courtland Townsite and Im- provement company which is the land corporation of the Great Western com pany.
 A gasoline hoist will be installed for preliminary operations. but t'
 company figures on something more permanent in the future. Two of the compartments in the shaft will be full size, and the third will be for a dinky hoist et present. and win be later enlarged to meet the needs of the shaft as development work goes on. The new shaft is located not far from the Humbolt shaft of the same company, which nas already shipped nearly four hundred thousand dollars worth of ore. The Humboldt is one of the old shafts in the Turquoise district and recent strikes there have improved the already fayorabel con litions in that mine. Many mining men who nave studied the surface showings at Courtland have declared that the decidedly strong iron cap, Or goSsan, just above the Humbolt shaft and the new Mamie, on the sid- cf the Dragoon foothills, gives indi- cations of being the possible blow cut of the heart of the Turquoise district D. w. Brown. who owned large holdings of claims in this very section. has taken out of an adit assessment hole copper ore of the richest grade. It is a well known fact in copper geology that the gos. san Is the first evidence of copper bodies. But it k also well known that these gossans. or iron caps. have 2 habit of shifting and spreading, so that the gossan does not always mark the limits or the exact direction oi the underlying bodies Of ore. How ever. copper ore to the amount of marketable value is usually found un, der thees iron caps. especially where the iron stain is w9dged in between bordering formations of lime or DOT. EhoTr. Tn general copper veins are. whi'e irregular. usually located be tween iseous rock formations Of this character. On this hypothesis. both the Humbolt and Mamie shafts are teries of the sort are not popuarl located over copper bodies of value. There are in this district. as well as in that of Bisbee. five distinct con. ditions Of formation to be taken into consideration in the opening of q copper shaft. On the surface is the Sossan or iron cap. usually carrying small values of copper, sometimes native or glance. and even the green stain to be found often about the openings in Ccurtland. especially the cid shaft on the. Copper Queen claims near the site of the Mexico & Col orado railroad station, almost direct ly opposite the terminus of E ave nue in the Great Western townsite. As water. percolating through the surface for millions of years, has had much to do with the depositation of copper suiphides, the gossan some times is of great depth, and even sometimes extends to water level. In Courtland it usually does not. In