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DRP, a Twining Company

Petrographic & Materials Investigations.

Headquartered in Boulder, Colorado, we use concrete petrography and other analytical methods to investigate concrete and other cement-based construction materials, natural rock products, and geological resources.

Contact Us

DRP, a Twining Company
2800 Wilderness Place, Suite A
Boulder, CO 80301
Phone: 303.938.0166
Fax: 303.938.0167
Email: drp@drpcinc.com