| Lafarge |
| Lafarge Aggregates Ltd |
| Lafarge Cement (UK) - Weardale Works - DL13 2AA |
| Lafarge Readymix - Blackett Road - DL1 2BJ |
| Micromix R M - Greenland Lodge - DH7 9RS |
| Plasmor Ltd - Groat Avenue - DL5 6HB |
| R M C Ltd - St. Helen Way - DL14 9AJ |
| RMC Readymix - Littleburn Industrial Estate - DH7 8HH |
| Tarmac Topblock Ltd - Littleburn Industrial Estate - DH7 8HJ |
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