Sono proprio minatori...ma nel senso più ampio del termine. Sono direttori, ispettori, ingegneri, tecnici e semplici minatori, in genere tuttio dipendenti dal Ministero delle Miniere. I gradi più alti (all'incirca equiparabili al rango di ufficiale) vestivano sia un'uniforme di servizio, sia un'uniforme di parata. I minatori, quelli che dovevano scendere in miniera, giocoforza avevano solo un'uniforme di rappresentanza per le cerimonie ufficiali.
Da
questo sito ho tratto delle notizie interessanti...
ecco una bella tavola con una serie di uniformi da minatori di URSS, Polonia, Cecoslovacchia e Germania:
mininguniform.jpg
1 - mining officer (Second half of the 18th century);
2 - officer of mining troops (Second half of the 18th century);
3 - mining officer (1804);
4 - soldier of mining troops (1817);
5 - headquarters officer of the corps of mining engineers (1834)
6 - conductor of the corps of mining engineers (1837);
7 - officer of Mining department who serves on the Caucasus (1853);
8 - chief officer of the Corps of mining engineers (1855);
9 - officer of the Corps of mining engineers (1857);
10 - mining engineer having a general rank (1867)
11 - student of Mining institute (1882);
12 - mining engineer in uniform tail-coat (1885);
13 - foreman (1896);
14 - mining engineer in ceremonial uniform (1904);
15 - mining engineer in everyday uniform (1904)
16 - honorary miner in ceremonial uniform (instituted in 1947);
17 - mining director in everyday uniform (1947);
18 - mining general director in ceremonial uniform (1947);
19 - general director - inspector of the State mining and technical inspectorate (1947);
20 - student of mining high schools (1947)
21 - minister of coal industry of the USSR in uniform instituted in 1976;
22 - mining engineer (higher official category) in uniform (1976);
23 - mining technician (junior official category) in uniform (1976);
24 - honorary miner in ceremonial uniform (1976);
25 - mining engineer (highest official category) in a winter coat (1976)
26 - mining officer in ceremonial uniform (Germany, the first half of the 20th century);
27 - miner in fuel dress (Germany);
28 - miner in traditional uniform (Czechoslovakia);
29 - mining engineer (highest official category) in ceremonial uniform (Poland);
30 - mining technician (junior official category) in everyday uniform (Poland).
Io non immaginavo neppure esistesse, figuriamoci.