Karjeri un karjeru izstrāde--Drošības tehnika
type: Concept
created: 2014-11-05
modified: 2014-11-05
broader: Raktuvju drošība
in scheme: subject
preferred label: Quarries and quarrying--Safety measures @en

Raktuvju drošība
type: Concept
narrower: Karjeri un karjeru izstrāde--Drošības tehnika
preferred label: Mine safety @en