Anh
holing block
nog
timber chock
Đức
Holzpfeiler
Pháp
bois de calage
quadrillage de traverses
holing block,nog,timber chock /ENERGY-MINING/
[DE] Holzpfeiler
[EN] holing block; nog; timber chock
[FR] bois de calage; quadrillage de traverses