Descriptors | Occupational safety, Washing, Safety measures, Cleaning materials, Repair, Brickwork, Cleaning, Buildings, Building conservation, Calcium silicate bricks, Faience, Terracotta, Abrasive processes, Inspection, Chemical cleaning, Cast stone, Concretes, Construction materials, Surfaces, Building maintenance, Contaminants, Stone, Masonry work, Clay, Bricks, Mechanical cleaning, Cleaning equipment |