Ключевые слова: ailing, alberta, backflow, bolts, crank, drilling, economy, energy, equipment, exploration, fitting, flanges, gas, gasfield, gasline, gaswell, grunge, industrial, industry, iron, metal, natural, old, opec, open, petroleum, piped, pipeline, pipes, piping, pressure, pressurized, resources, rust, rusty, scruffy, steel, turn, valves, wheel, work, working,