PRD BH 45 250
Blast hole drilling in open cast mines
Available on request
- Hole Ø
- 150–250 mm
- Depth
- 45 m
- Pull-down
- 28,000 kgf
- Torque
- 9,000 Nm
Blast Hole Drilling (DTH / Rotary)
Blast hole drilling prepares the bench for blasting. The right rig depends on your hole diameter, bench depth and the scale of the mine, from compact 18-ton crawlers to 45-ton production rigs and excavator-mounted attachments.
Request rental quoteHow it works
With a down-the-hole (DTH) hammer, percussion happens at the bottom of the hole right behind the bit, so penetration stays efficient in hard rock as the hole deepens. Rotary drilling relies on high pull-down force and rotation, typically for larger holes in softer or fractured rock. Our larger blast hole rigs support both.
Used for
- Production blasting in open-pit gold and mineral mines
- Coal, limestone and surface mines
- Hole diameters from 100 mm to 250 mm
- Sites that already run excavators (PRD EX 65 attachment)
Rigs for this work
PRD BH 30 160
Blast hole drilling in open cast mines
Available on request
- Hole Ø
- 165–203 mm
- Depth
- 37 m
- Pull-up
- 11,000 kgf
- Torque
- 5,000 Nm
PRD BH 15 100
Drilling for blasting in mines
Available on request
- Hole Ø
- 100–165 mm
- Depth
- 16 m
- Pull-down
- 6,000 kgf
- Torque
- 3,300 Nm
PRD EX 65
Blast hole for coal, limestone and surface mines
Available on request
- Hole Ø
- 115–165 mm
- Depth
- 24 m
- Pull-up
- 7,000 kgf
- Torque
- 3,300 Nm
Frequently asked questions
+Which blast hole rig do I need?
Start from hole diameter and bench depth: BH 45 250 for 150–250 mm to 45 m, BH 30 160 for 165–203 mm to 37 m, BH 15 100 for 100–165 mm to 16 m, EX 65 for 115–165 mm to 24 m on a 20-ton+ excavator.
+Are these rigs available now?
The blast hole rigs are available on request: we source the right PRD model for your project. Send your blast pattern and dates for availability.
Rental quote
Request a rig rental quote
Tell us about your project and we'll reply with availability, the right configuration and pricing.
Related guides
11 Nov 2026
Excavator-Mounted Drilling: When the PRD EX 65 Makes Sense
A drill attachment for 20-ton-plus excavators, powered by the excavator itself. Where it fits in coal, limestone and surface mines.
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DTH (Down-the-Hole) Hammer Drilling Explained
Why putting the hammer at the bottom of the hole makes DTH so effective in hard rock, and which rigs use it for blast holes, quarries and dewatering.
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