Question: In the USA, gun powder is used in conjunction with this to start the Boomershot.

<P0-S0> In firearm ballistics, the primer ( ) is a component of pistol and rifle cartridges, as well as shotgun shells. <P0-S1>  Early primers were simply the same black powder used to fire the weapon but poured into an external flash pan where it could be ignited by an ignition source such as a slow match or a flintlock. <P0-S2>  This external powder was connected through a small opening at the rear of the gun barrel that led to the main charge. <P0-S3>  As powder will not burn when wet, this made it difficult, or even impossible, to fire these types of weapons in rainy or humid conditions. <SEP> <P1-S0> Fusion bonded epoxy coating, also known as fusion-bond epoxy powder coating and commonly referred to as FBE coating, is an epoxy-based powder coating that is widely used to protect steel pipe used in pipeline construction, concrete reinforcing bars (rebar) and on a wide variety of piping connections, valves etc. from corrosion. <P1-S1>  FBE coatings are thermoset polymer coatings. <P1-S2>  They come under the category of "protective coatings" in paints and coating nomenclature. <P1-S3>  The name "fusion-bond epoxy" is due to resin cross-linking and the application method, which is different from a conventional paint. <P1-S4>  The resin and hardener components in the dry powder FBE stock remain unreacted at normal storage conditions. <P1-S5>  At typical coating application temperatures, usually in the range of 180 to , the contents of the powder melt and transform to a liquid form. <P1-S6>  The liquid FBE film wets and flows onto the steel surface on which it is applied, and soon becomes a solid coating by chemical cross-linking, assisted by heat. <P1-S7>  This process is known as “fusion bonding”. <P1-S8>  The chemical cross-linking reaction taking place in this case is irreversible. <P1-S9>  Once the curing takes place, the coating cannot be returned to its original form by any means. <P1-S10>  Application of further heating will not “melt” the coating and thus it is known as a “thermoset” coating. <P1-S11>  The world's leading FBE manufacturers are Valspar, SolEpoxy (former Henkel/Dexter), KCC Corporation, Jotun Powder Coatings, Sherwin-Williams, 3M, Axalta Coating Systems, Akzo Nobel, BASF, Manifa Paints and Powder Coatings and Rohm & Haas. <SEP> <P2-S0> Anvil firing (also known in the USA as an "anvil launching" or an "anvil shooting") in the USA is the practice of firing an anvil into the air with gunpowder. <P2-S1>  In the UK this is where black powder is filled onto the top of the Anvil and ignited. <P2-S2>  If the Anvil did not shatter it was deemed safe to use. <SEP> <P3-S0> The Boomershoot is a long range precision rifle event held near Orofino, Idaho, each year in late spring. <P3-S1>  The targets are filled with explosives at ranges from 375 to . <P3-S2>  Shooters are allowed to engage as many targets as they are able during the all-day event. <P3-S3>  Nearly every year the amount of explosives has increased; in 2004, the amount of explosives put out for people to shoot was greater than all of the other years combined. <P3-S4>  In 2005, new targets were introduced with smaller amounts of explosives to reduce window breakage in the surrounding countryside. <P3-S5>  In recent years, the event has also featured an explosive fireball and an Anvil firing to start the event and entertain the participants.