Consulting Geologists, P.C.
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G-L Engineering, P.C.

8 Brunswick Road
Troy, New York 12180
Phone: 518-270-5920
Fax: 518-270-5922

Quality Control

Maintaining a consistent product can be a daunting task if your deposit varies in quality. The geologists at Griggs-Lang Consulting Geologists have solved numerous aggregate quality problems and have the tools and experience necessary to assist your company in solving your quality control problems.


Rather than high-grade your deposit let Griggs-Lang help you maximize your reserves through blending. The blending programs we have implemented save our clients money and extend the operational life of their sites.

DOT Approval

Griggs-Lang has the experience and innovation that is needed in getting and maintaining State approval from traditional sand, gravel and stone sources to non-traditional aggregate sources such as slag and geological units traditionally thought of as unusable.