Ключевые слова: aluminum, aluminum mill, bunch, bundle, circle, concrete, construction frame, construction industry, cylinder, diminishing perspective, equipment, factory, ferrous sulfate, girder, group of objects, heap, heavy, industry, iron metal, manufacturing, material, metal, metallic, obsolete, old, pipe smoking pipe, pipe tube, pipeline, plate, profile, profile view, rack, rod, rough, rust, rust fungus, rusty, shelf, stack, stacking, steel, stock certificate, stock essex, storage compartment, storage room, strength, technology, warehouse,