Coal drilling is not a task for the faint-hearted, nor is it a job that can be accomplished without the right equipment. It demands robust, high-performance drill bits that can withstand the harsh conditions of the earth's crust and the abrasive nature of coal. The primary function of a coal drill bit is to penetrate the rock layers, creating boreholes for blasting or inserting mining machinery.
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2025-08-14 15:55
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