Test samples of gravels.
What does a Gravel Inspector do?
Tests samples of gravel to determine suitability for use in highway construction: Weighs sample before and after heating to determine moisture content. Screens gravel through numbered screens to determine coarseness of sample. May perform other duties in material testing laboratory, such as hardness tests, breakage tests, density tests for flexible base, compression and tensile strength tests, and tests for stress and strain [LABORATORY TESTER].