To accomplish the job, MD&B is attacking in waves: Crews work their way across the hillside, drilling dozens of holes in the rock. Then, they pack those holes with 10,000-12,000 pounds of explosives ˆ ...

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Houston-based Particle Drilling Technologies Inc. has successfully tested a new drilling system, designed to enhance the rate of penetration through hard rock. Particle-impact drilling (PID) is a ...

The scope of the work order encompasses the removal of rock pinnacles and high spots at the Coastal Berth of Jawaharlal Nehru ...