Diamond drillers and geotechnical drillers may work in distinct specialties today, but their histories are closely connected. A look back at early soil sampling, the rise of the Standard Penetration Test and the development of combination rigs shows how one drilling tradition eventually branched into two.
Diamond drillers and geotechnical drillers may work in distinct specialties today, but their histories are closely connected. A look back at early soil sampling, the rise of the Standard Penetration Test and the development of combination rigs shows how one drilling tradition eventually branched into two.
