2 Sentences With "jacklegs"

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During the 50s this method was widespread throughout the mine. According to the inclination of the veins, used: parallel fronts (for sub-horizontal veins) or irregular fronts, also called "modas e bordados"(fashions and embroideries) (for veins with a slope between 7º and 12º). Wooden ore cars circulated within the stope (manual filling) that transported the ore to the bins where it dropped by gravity to the Lower Scrolling Level. Mechanical drilling was done with compressed air jacklegs and the start off was done, as today by explosives.
Effective development has often been handicapped by transportation difficulties and the propensity of unscrupulous businessmen to over-hype their claims. E.M. Morgan said in 1900, "There's too many cheap-john jacklegs in the camp looking for something for nothing, and they find it. The result is they go down into the penny ante belt, float a jim-crow company, sell shares, find they have a wildcat, go broke and the shareholders in chorus condemn the country in general, instead of stringing up the 'floater'". In 2007 a new mining boom began with the production of molybdenite concentrates at Roca's MAX mine.