521, black & white, caucasian, cutting, historical, industry, lumber, lumberjack
521, black & white, caucasian, cutting, historical, industry, lumber, l, Vintage Black & White, 86539349
architecture, black and white, cloud, cooling tower, copy space, dark, day, dramatic, energy, engineering, environment, five objects, fuel and power generation, industry, low angle view
Aquifer, Arrow Sign, Carbon Dioxide, Close-Up, Coal, Connection, Cross Section, Day, Digitally Generated, Direction, Environment, Fossil Fuel, Fuel and Power Generation, Geology, Global Warming