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Tungsten carbide, an alloy composed primarily of tungsten and carbon, is renowned for its exceptional hardness and wear resistance. It is these properties that make it the ideal material for manufacturing mining button bits. The 'button' refers to the protruding segments of tungsten carbide that are brazed onto the drill bit, creating a robust cutting edge capable of withstanding the intense pressures and abrasive conditions encountered deep within the earth.

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Twist drills, with their helical cutting edges, became the standard for 75mm drill bits in the 1960s. These drills cut by shearing the material and ejecting it through the flutes, resulting in cleaner holes with less material buildup. The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels75mm drill bit.

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