referanser Diamantboring
| verket | Per Hele Thom | Tlf 70231000 | 2005 | Diamantboring i dagen | 0,3 mill |
| Mo Min AS | Trond Refseth | Tlf 75152910 | 2005 | Underjordisk borring | 0,9 mill |
| Rana Gruber AS | Bengt Sand | Tlf 75198300 | 2003 | Underjordisk boring | 0,1 mill |
| Norsk Stein AS | Knut Petter Netland | Tlf 52792900 | 2002 | Borring i dagbrudd | 2,8 mill |
| Nikkel Olivin AS | Lisbeth Storhaug | Tlf 76928800 | 2001 | Underjordisk Boring | 2,1 mill |
| Geologiske Tjenester | Boye Flood | Tlf 22506530 | 2000 | Aviksmåling | |
| Norcem AS | Trond Kaasa | Tlf 35572000 | 1999 | Borring over og under jord | |
| Langnes Marmor AN | Singe Langnes | Tlf 71296257 | 1998 | Borring under jord | |
| Hundstadkalk AS | Trond Vatne | Tlf 71262633 | 1998 | Borring under jord | |
| Norsk Marmor AS | Martin Solheim | Tlf 758009590 | 1997 | Borring under jord |