Word: intervalsâ
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...gemstone-mining operation" and pioneering new technology like an optical sorter adapted from the recycling industry that is used to scan the shaft debris for overlooked tanzanite. Never mind that some systems underground?such as having workers hand-tie sacks of debris onto a pulley rope at 9-sec. intervals???seem straight out of The Flintstones. He's enthusiastic about the potential for mining companies to have a positive impact in Tanzania...
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