The Plan B would drill at an 85 degree angle into an area of mine shaft that is used as a mechanical workshop.

CNN: New drill arrives in Chile with great fanfare

Under Plan B, a hole is being drilled at a roughly 80-degree angle into an area of the mine shaft that is used as a mechanical workshop.

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Helping Komatsu persuade the mine operator to switch was a new drive system that instead of the conventional mechanical axle and cogs uses rear-wheel-mounted electrical motors.

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