Tutorials/Cobblestone farming – Official Minecraft WikiYou're building in the middle of the ocean. You need large amounts of cobblestone, more than you've gotten from mining. To make a self-repairing object (e.g..cobble in mining industry repairing machine,Machine-related injuries in the US mining industry and . - NCBIMachine-related injuries in the US mining industry and priorities for safety . with these accidents were operation of the machine and maintenance and repair.
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