from The Century Dictionary and Cyclopedia
- n. Drilling with an annular bit, usually of diamonds set in a holder, so that a core is left in the axis of the tube. From the core the strata which have been pierced can be determined.
Sorry, no etymologies found.
The Transport Minister, David "The Walrus" Campbell, was to up to his tusks in core-drilling samples yesterday at Pyrmont, inspecting the first bore holes needed to launch Sydney's newest transport revolution, the Central to Rozelle CBD Metro.
Some of the world's leading petroleum industry companies have joined forces with an Australian drilling equipment specialist to drive the advance of a world-first "intelligent" core-drilling technology for the oil and gas industry
"intelligent" core-drilling technology for the oil and gas industry.