Mooskappe

It was intended to protect miners when working underground from the impact of small rockfalls and from hitting their heads against the gallery roof (Firste).

It appears in steel engravings from about 1850, for example by Wilhelm Ripe, as an important item of safety gear.

About the miner's uniforms he says:[3] These [miners] wore dark, wide, usually steel blue, jackets, usually hanging below their bellies, trousers of similar hue, a hide apron tied behind them and a small, green, felt hat, entirely rimless, like a truncated ball.

(Diese (Bergleute) tragen dunkle, gewöhnlich stahlblaue, weite, bis über den Bauch herabhängende Jacken, Hosen von ähnlicher Farbe, ein hinten aufgebundenes Schurzfell und kleine grüne Filzhüte, ganz randlos wie ein abgekappter Kegel.

)The Mooskappe was usually made of a hard, green felt, but there were also "crocheted" (gehäkelte) designs.