gravel extraction

nat.res.

Sand- und Kiesabbau vom Meeresboden; Sand- und Kiesgewinnung vom Meeresboden

gravel extraction Obtaining a mixture of coarse sand and small water- worn or pounded stones, (used for paths and roads and as an aggregate) from the earth

environ.

Kiesabbau m

gravel extraction

: 4 phrases in 1 subject

Natural resourses and wildlife conservation