IDDO maintains and operates existing ice drilling equipment and develops new systems with two principal foci:
1. to provide high quality ice cores, and
2. to produce boreholes that provide access to the interior and beds of ice sheets and glaciers for such purposes as embedding instruments, collecting gas samples, setting seismic charges, studying subglacial processes, and studying subglacial geology.

4-Inch Drill

Photo of 4-inch Drill The 4-Inch Drill is an electromechanical ice coring drill that takes a 104 mm diameter core. Cores can be retrieved from depths down to approximately 400 meters. Winches with 100-, 200-, and 400-meter cables are available. The drill is of a mature design and has been used successfully for many years. It is particularly useful on projects requiring a larger diameter core than produced by the Badger-Eclipse drills. Depending on configuration, the drill can be transported by light aircraft or helicopter.

An electrothermal version of this drill, which melts an annulus around the core, can be substituted for use in ice warmer than -10° C. Both versions use core dogs to break the core off and hold it for retrieval.

IDPO-IDDO is in the process of upgrading the 4-Inch Drill design. The upgraded drill design is referred to as the Foro Drill ('Foro' is Latin for "to bore, make a hole"), and the design of its sonde, winch, and tower reflects beneficial aspects of the Intermediate Depth Drill (IDD) design. In addition, the new sonde design will also be submersible and watertight.

Type: Coring
Number in Inventory: 2
Max. Practical Depth: 300 - 350 m
Core Diameter: 104 mm
Drilling Time for Typical Depths: 100 m ~36 hr
150 m ~70 hr
200 m ~100 hr
IDDO Driller Required?: yes, 2 drillers
Power Requirements/Source: Generator or solar cells
Time to Move
(Breakdown and Setup):
6 hours
Shipping Weight: 2800 lbs
Comments: Complete unit operating is ~1000 lbs. Heaviest component is winch (on sled) ~500 lbs.

Subsystem # in Inventory Description Weight Cube
Sonde 3 Mechanical coring units    
Reamer   Reamers for 8-, 10-, and 12-inch    
Winch (400-meter) 1      
Winch (200-meter) 2      
Winch (100-meter) 1