Abstract: Samples of particulate soil contaminated with solid particles having higher -ray absorption coefficients than the soil, are irradiated with a microfocused X-ray beam within an analysis zone to produce X-ray images of such samples. By controlling relative scanning and magnifying movements between the samples within the analysis zone and the X-ray beam, image features corresponding to the solid particles in the soil are rendered detectable for measurement purposes and to provide data from which size and distribution of contaminants in the soil are calculated.

Abstract: An apparatus for ultrasonic inspection of polyethylene-jacketed, cast expive billets including an immersion tank and a roller system for axially rotating the billet while immersed in the coupling fluid. A drive mechanism traverses a pair of laterally opposed transducers axially of the rotating billet for through-transmission inspection of the majority of the billet. A second drive mechanism sweeps a third transducer through a 90.degree. arc for pulse-echo inspection of the hemispherical base of the billet.