Meadowgate, from opencast coal site to Country Park - part 2 Gareth Horne 9:23 14 years ago 55 876 Далее Скачать
Opencast mining ||Blasting Techniques Line Drilling. Mining Education 0:30 3 years ago 3 260 Далее Скачать
The early stages in a new opencast coal mine within The Northumbrian Coal Fied in the UK. Harold Hills 4:16 10 years ago 102 987 Далее Скачать
Controlled Blasting Techniques ||Open Cast Mine blasting ||line drilling ||pre splitting. Mining Education 0:30 3 years ago 9 461 Далее Скачать
Opencast Coal Mining in Newcastle will Damage the City and the Planet Newcastle Local Interest 2:30 5 years ago 2 256 Далее Скачать