E/MJ : engineering and mining journal . o place himselfadvantageously. He began his experience undergroundin Virginia City, Nov., where he obtained employmentin the Ophir mine as a carman and miner. In 1875, at the age of twenty-three, Mr. Callahanwent to Utah as superintendent of the South Star and Titus mines, on Emma Hill. He soon had otherinterests at Bingham Canyon, Utah, and in Tuscarora,and other mining camps in Nevada. In 1877 he went toBodie, Cal., to take charge of several properties Callahan finally established himself in New Yorkas a mining engineer. During the Leadville,
E/MJ : engineering and mining journal . o place himselfadvantageously. He began his experience undergroundin Virginia City, Nov., where he obtained employmentin the Ophir mine as a carman and miner. In 1875, at the age of twenty-three, Mr. Callahanwent to Utah as superintendent of the South Star and Titus mines, on Emma Hill. He soon had otherinterests at Bingham Canyon, Utah, and in Tuscarora,and other mining camps in Nevada. In 1877 he went toBodie, Cal., to take charge of several properties Callahan finally established himself in New Yorkas a mining engineer. During the Leadville, Col.,excitement he took charge of the Bull Domingo mine, inCuster County. About the year 1880, he was on GeorgeHearsts staff in Arizona and New Mexico. In Callahan returned to California and managed theBonanza King mine, in San Bernardino County, forThomas Ewing and Daniel Gillett, of New York. Aboutthis time he also went to examine the La Union mine,in Costa Rica, for Daniel Gillett, who represented theLondon Exploration HENRY CLAY CiVLLAHAN In association with Henry Bratnober and AlfredWartenweiler, Mr. Callahan went to Australia in 1893to represent an English investment company there. InAustralia he was prominently identified with the devel-opment of the Kalgoorlie gold fields, becoming super-intendent and manager of the Lake Vjew Consols andseveral other mines in that district. He was also man-ager for the London & Globe Exploration Co. In1900 he was appointed one of the Queens Commissionersfrom Western Australia to the Paris Exposition. As a mining engineer, Mr. Callahan belonged to aconspicuous group of engineers who made mininghistory in the 80s and 90s by their ability to discoverand develop orebodies and by their practical sense inmanagement. On account of ill health, Mr. Callahan practicallyretired from active participation in mining affairs in1906. Steel Production in Austria-Hungary, according to theironmonger, amounted to 1,763,745 tons in 1918, comp
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