CLL is capable of digging the deepest shafts in New Zealand. These vertical holes can be up to 4.2m in diameter, and up 80m deep.

This capacity is supplied by the Liebherr LRB355 rig, supported by onsite bentonite production to prevent the hole collapsing as it it drilled.

CLL is able to guarantee hole straightness through the use of sonar and computer integration, which can tell at any given point how vertical the cavity is.

Our deep shaft capability and expertise is a natural progression from CLL’s piling expertise.

“Being able to both dig deep shafts, and ensure they’re perfectly straight, is a technique we’re very proud of. We consider ourselves to be experts at this, and proven our capabilities multiple times.”

— Juan Santacruz