Holcim Gravel and Grit Quarry in fog, Plettenberg, Sauerland, North Rhine-Westphalia, Germany Stock Photo - Alamy

Gravel quarry hi-res stock photography and images - Page 2 - Alamy

Chalk mines hi-res stock photography and images - Alamy

Holcim hi-res stock photography and images - Alamy

Gravel extraction hi-res stock photography and images - Alamy

Limestone mining hi-res stock photography and images - Alamy

Holcim hi-res stock photography and images - Page 2 - Alamy

limestone quarry with mining terraces, Germany, North Rhine

Holcim quarry hi-res stock photography and images - Alamy

Limestone mining hi-res stock photography and images - Alamy

Limestone mining hi-res stock photography and images - Alamy

Limestone mining hi-res stock photography and images - Alamy

limestone quarry with mining terraces, Germany, North Rhine