Question

Who stared borehole latrine?

Answer 1

Answer:

By the first century BC, Chinese craftsmen cast iron drill bits and drillers were able to drill boreholes up to 4800 feet (1500 m) deep. By the eleventh century AD, the Chinese were able to drill boreholes up to 3000 feet in depth.

Answer 2

Answer:

By the first century BC, Chinese craftsmen cast iron drill bits and drillers were able to drill boreholes up to 4800 feet (1500 m) deep. By the eleventh century AD, the Chinese were able to drill boreholes up to 3000 feet in depth

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