Descriptors | Sampling equipment, Surveys, Classification systems, Geology, Geological analysis, Personnel, Rocks, Soil drilling, Aerial photography, Excavations, Density measurement, Reports, Site investigations, Defects, Field testing, Geophysical measurement, Soils, Physical testing, Safety measures, Soil-testing equipment, Samples, Log sheets, Planning, Soil sampling, Soil testing, Selection, Mechanical testing, Design, Occupational safety, Industrial, Sampling methods, Extraction (minerals), Land pollution, Ground water, Hydrology, Test specimens, Soil surveys, Construction operations, Symbols, Land, Quality assurance, Laboratory testing, Ecology, Quarries, Mining |