demolition expert

Machine-translated from the German article

A blasting-licensed person (Sprengberechtigter) or shooting-licensed person (Schießberechtigter), colloquially called a blasting master (Sprengmeister), in Austria a blasting-authorised person (Sprengbefugter), is a person who has completed the legally prescribed training courses to acquire expertise in blasting technology (for example, in Germany on the basis of §§ 7, 20 and 27 of the Explosives Act and the 1st Ordinances to the Explosives Act). The blasting-licensed person is not a trade apprenticeship, but an additional qualification.