William Martindale, Coca and Cocaine (1892)
“ There the Indians work night and day, the pickaxe or the shovel in their hand, to detach the minerals, which they carry on their shoulders through long and deep subterranean passages, or they stamp with their feet masses of mineral from which they have to extract the metal. All the rest they get during this incessant toil is to lie down, turn by turn, on a skin covered with a poncho to snatch a few moments of repose, and to chew their portion of Coca leaf. ”
