| Presumably it comes from the main seam! (3,4) |
|
|
| In the main, carboniferous deposit (3-4) |
|
|
| Coastal fuel (3,4) |
|
|
| Does it come from a main source of fuel? (3-4) |
|
|
| Coastal mineral |
Universal |
16 Apr 2018 |
| Coastal mineral |
|
|
| Fossil fuel found on coasts |
Universal |
28 Nov 2015 |
| Fossil fuel found on coasts |
|
|
| Constituent of molding sand |
|
|
| Fossil fuel found in coastal veins |
|
|