"core drilling" is a grammatically correct phrase and is commonly used in written English, particularly in technical or scientific contexts.
It refers to the process of using a specialized drilling tool to extract cylindrical samples of rock or soil for analysis. Example: The geologist conducted core drilling at various locations to gather data on the composition and structure of the Earth's crust.
The core drilling samples, like the salt wedge studies, are another way to provide backup verification, or "ground truth," as it is called, for the sonar images.
Robin E. Bell, a senior research scientist at Columbia University, has seen the storm in her imagination, and touched with her fingers the dense, black-earth core drilling samples that reveal, in their banded marks, the river's ancient trauma.
Etheridge, a principal research scientist at CSIRO and co-author of the new research, has been to Antarctica seven times and is a veteran of ice core drilling programs.
Sealing core drilling is costly, and data points are limited.
A special drilling machine was retrofitted to perform core drilling on damaged concrete under constant pressure.
Core drilling with diamond tool is an efficient method for machining of holes in engineering ceramics.
The diameter of the pre-drilled hole is set equal to the inner hole of core drill.
For enlarging cored, punched, or drilled holes, core drills are particularly suited.
This is called a core drill because the abrasive trapped between rotating tube and stone grinds out a ring containing a core that can be removed.
"Core drill samples and other documents show a tremendous amount of gold underneath the original pit," Mr. Smith said in a telephone interview from his headquarters outside Detroit.
Layers of ice in the core, drilled from James Ross Island, near the northern tip, indicate periods when summer snow on the ice cap thawed and then refroze.
