John Siemens, WAQTC
John has eight years of experience in materials testing. He is skilled in material sampling and testing, as well as concrete sampling and testing, both in the field and laboratory. John is also experienced in several methods of ground exploration, including borehole drilling/sampling, electrical resistivity, seismic refraction, seismic linear micro-tremor, and 2D and 3D imaging. He mainly works in the laboratory, conducting materials testing and maintenance, as well as training for additional materials knowledge and certifications.