What size drill does the V-30 require?

• Hoisting power of up to 30,000 pounds;
• Torque capacity of 5,200 feet/pound;

What underground air pressure is required ?

• Mine air pressure, normally 90 pounds, has to be increased to 300 pounds to provide 1200 CFM for each of the two hammers on the V-30.

What is the power consumption for the V-30?

• The drill and V-30 together use 190 hp.

Do you need to use water with this drilling method?

• Yes. Water is essentially used to control dust produced during drilling and to evacuate cuttings. From 3 to 5 gallons per minute is required.

What hole diameter can be drilled with the V-30?

• The V-30 drills holes 30 inches in diameter.

What drilling procedure is used with the V-30?

• A 6.5-inch pilot hole is drilled, and then reamed to 10 inches and finally to 30 inches.

What is the maximum angle of drilling?

• 42 to 90 degrees.

What is the maximum length that can be drilled at 76 cm (30 inch) in diameter?

• Up reaming: 125 feet
  Down reaming: 400 feet
  Conventional drilling: 400 feet

What is the penetration rate for a 76-cm (30-inch) hole?

• On average, from 3 to 8 feet (1 to 2.4 m) per hour, depending on rock hardness, for holes 76 cm (30 inches) in diameter.