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Designing a system of mining to suit the split seams in the Northumberland coal field. Analysing the small detail reveals how it was formed.
Designing a system of mining to suit the split seams in the Northumberland coal field. Analysing the small detail reveals how it was formed.
Earth's physical resources: extracting coal and oil - for iPad/Mac/PC
Transcript -- Designing a system of mining to suit the split seams in the Northumberland coal field. Analysing the small detail reveals how it was formed.
Earth's physical resources: extracting coal and oil - for iPod/iPhone
Transcript -- Designing a system of mining to suit the split seams in the Northumberland coal field. Analysing the small detail reveals how it was formed.