They can be also applied in industrial kilns of gas, oil etc, They are widely used and adopted by domestic and overseas kiln companies.

Five minutes after that come the fire-raisers, who light 10km of “fireline” using drip torches (devices that drop flaming paraffin at a constant rate).

Trenches remained merely a part of siegecraft until the increasing firepower of small arms and cannon compelled both sides to make use of trenches in the American Civil War (1861–65).