Complex sentence: This type of material is typically used in poorly ventilated areas such as aircraft, rail cars or ships.ilroad industry, wherever high voltage or track signal wires must be run into and through underground tunnel systems.
Split into simpler sentences: This type of material is typically used in poorly ventilated areas such as aircraft, rail cars or ships. It is also used extensively in the railroad industry, wherever high voltage or track signal wires must be run into and through underground tunnel systems.