Primacord
Primacord is a brand of detonating cord used in blasting. It was developed in 1936 by the Ensign-Bickford Company. Ensign-Bickford sold their registered trademark for Primacord to Dyno Nobel in 2003. which manufactures it in their Graham, Kentucky factory. The name is also used as a genericized trademark for any detonating cord.
Description
Primacord consists of a continuous core of PETN, RDX or other high explosive, bound by textile yarns and finished with plastic and wax as waterproofing agents. It is produced in eight strengths:| Name | Loading g/m | Colour |
| Primacord 1 | 1.5 | Yellow |
| Primacord 2 | 2.1 | Orange |
| Primacord 3 | 3.2 | Red |
| Primacord 4Y | 3.6 | Yellow |
| Primacord 4R | 3.6 | Red |
| Primacord 5 | 5.3 | Red |
| Primacord 8 | 8.6 | Red |
| Primacord 10 | 10.6 | Yellow |
Primaline is a related product differing principally in having a plastic jacket instead of textile. Primaline is also available in higher loadings, up to 85 g/m :
| Name | Loading g/m | Colour |
| Primaline 4D | 3.6 | Orange |
| Primaline 4HS | 3.6 | Clear with blue stripe |
| Primaline 5 | 5.3 | Orange with wax coating |
| Primaline 5D | 5.3 | Orange |
| Primaline 5NF | 5.3 | Yellow |
| Primaline 8D | 8.6 | Orange |
| Primaline 8HS | 8.6 | Clear with black stripe |
| Primaline 10HS | 10.6 | Clear with red stripe |
| Primaline 21 | 21.3 | Clear |
| Primaline 32 | 31.9 | Clear |
| Primaline 42 | 42.5 | Clear |
| Primaline 85 | 85 | Light green |