Nonel

Nonel is a shock tube detonator designed to initiate explosions, generally for the purpose of demolition of buildings and for use in the blasting of rock in mines and quarries. Nonel is a contraction of "non electric".^[1] Instead of electric wires, a hollow plastic tube delivers the firing impulse to the detonator, making it immune to most of the hazards associated with stray electric current.

It consists of a small diameter, three-layer plastic tube coated on the innermost wall with a reactive explosive compound, which, when ignited, propagates a low energy signal, similar to a dust explosion. The reaction travels at approximately 2,000 m/s (6,500 ft/s) along the length of the tubing with minimal disturbance outside of the tube. The design of nonel detonators incorporates patented technology, including the Cushion Disk (CD)^[buzzword] and Delay Ignition Buffer (DIB)^[buzzword] to provide reliability and accuracy in all blasting applications.^{[citation needed]}

Nonel was invented by the Swedish company Nitro Nobel in the 1960s and 1970s,^[2] under the leadership of Per-Anders Persson,^[3] and launched to the demolitions market in 1973.^[4] (Nitro Nobel became a part of Dyno Nobel after being sold to Norwegian Dyno Industrier AS in 1986.)