Graymont New Zealand sites manufacture thermally rated chip. This material has been tested to meet relevant standards as a high voltage cable bedding material.
Other specialised materials are available including stemming stone and selected fill.
Thermally Rated Chip
Le saviez-vous ?
Limestone, the most important and abundant sedimentary rock in the world, is formed by the compaction of the remains of coral animals and plants on the bottoms of oceans.