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The hardness of limestone can vary greatly, from relatively soft to extremely hard, depending on factors such as its mineral content and degree of compaction. Soft limestones can be easily drilled using standard drilling equipment, but harder varieties often necessitate more robust machinery and specialized bits. Carbide-tipped drill bits, for instance, are commonly employed due to their durability and ability to withstand the abrasive nature of limestone.

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Another significant benefit lies in their safety. Since they do not use electrical currents, there is a reduced risk of electric shock, which is especially crucial in hazardous environments such as oil rigs or mines. Additionally, the use of compressed air allows for a cleaner working environment, as no oil or fuel emissions are produced Additionally, the use of compressed air allows for a cleaner working environment, as no oil or fuel emissions are produced Additionally, the use of compressed air allows for a cleaner working environment, as no oil or fuel emissions are produced Additionally, the use of compressed air allows for a cleaner working environment, as no oil or fuel emissions are producedpneumatic drilling machine.

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