HELEME
1. Tšireletso ea mahlo habeli filthara ho qoba mahlaseli a kotsi a ultraviolet le mahlaseli a infrared a hlahisoang ke arc, hammoho le tšenyo ea mahlo e bakoang ke khanya e matla ea welding, le ho thibela ketsahalo ea electro-optic ophthalmia.2. Tšireletso ea sefahleho Ho thibela ka katleho li-splashes le lintho tse kotsi ts'ebetsong hore li se ke tsa senya sefahleho, 'me li fokotsa ketsahalo ea ho chesa letlalo.3. Tšireletso ea phefumoloho Tataiso ea phallo ea moea, ka katleho ho fokotsa khase e kotsi le lerōle le lokollotsoeng ka ho cheselletsa 'mele le ho thibela ho hlaha ha mafu a mosebetsi oa pneumoconiosis.