Watch the open cast coal mining process in action. From dozing and drilling to blasting, removing overburden, and finally coal production. | Ministry of Coal,Government of India

Nigeria: A Nation of Riches (1950s) - British Pathé Documentary.

Heavy machinery operates in a vast open-pit excavation under a clear sky.

Flooding quarry pit forming deep basin with turquoise water collecting between terraced rock walls. Developing open pit excavation filling with water across stepped mineral slopes. Submerged quarry

Vast quarry basin filling with emerald water inside terraced rock walls. Circular open pit excavation collecting water along spiraling mineral slopes. Immense flooded quarry forming artificial lake