Dando Mintec 12.8

The Dando Mintec 12.8 is an extremely powerful mid-range mineral exploration drilling rig. The machine is capable of deploying wireline drilling, RC drilling (reverse circulation drilling) and RAB drilling (rotary air blast drilling.) The rig is suitable for all types of mineral exploration and has been proving very successful for Indonesian coal exploration.


Carrier Vehicle: Type: Crawler chassis

Power Unit*: 540HP 6 Cylinder diesel engine

Drilling Capacity: Pullback: 12,800kg. Pulldown: 7,500kg. Hook load(max): 12,800kg.

Mast Dimensions: Working Mast Height: 9,140mm. Working Stroke: 7,600mm

Mast Dump: To 45 degrees degrees

Rotary Head Performance*: Option 1: Speed (max): 750rpm, Torque (max) : 12,050Nm (RH11 head)
Option 2: Speed (max): 1,290rpm. Torque (max): 5,670Nm

Circulating Swivel Unit: Internal Diameter: 51mm. Operating pressure(max): 600psi

Breakout and Clamps* Min Clamping Diameter: 60mm. Max Clamping Diametre: 220mm. Load Suspending Capacity: 12,800kg.

Casing Divertor: 150mm ID

Wireline Footclamps: To suit BQ-PQ Wireline drill rods.

Main Winch*: Hoist (single line, bare drum): 10,240kg. Speed (single line, bare drum): 68m/min. Drum capacity: 56m @ 22mm

Wireline Winch*: Hoist (single line, bare drum): 2,244kg. Speed (single line, bare drum): 167m/min. Drum capacity: 1,600 @ 6mm

Tool Handling Winch*: Hoist (single line, bare drum): 1,326kg. Speed (single line, bare drum): 15m/min. Drum capacity: 30m @ 8mm

Coring Pump: Flow rate (max): 200l/m. Discharge pressure (max): 500psi.

In Line Oiler: Fitted to assist DTH operations

Control:Hydraulic Power circuit based on load sensing, proportional valves. Drilling controls available from driller's
control console.

Levelling Jacks: Two front and two rear

Rig Lighting: Fitted as standard

Compressor: Ingersoll Rand XHP900 (900rpm/350psi)

Maximum Drilling Depths**:

NQ (7.58kg/m) drill rods-1,351m

NWY (8.0kg/m) drill rods-1,280m

HQ (11.45kg/m) drill rods-891m

4" RC (32.0kg/m) drill rods-320m

*other options available

**calculated from the weight of drill rods only and using 80% of the rig's pullback
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