00:00the hair-necked tunnel boring machine crushes forward against 400 meters of mountain rock.
00:05How do massive steel cutters survive inside 57 kilometers of boiling granite under 7,500 feet?
00:12Instead of melting, the alloy teeth rely on extreme wear resistance to grind through
00:18abrasive granite despite crushing temperatures. This freezing system protects the cutting head
00:23as the hair-necked tunnel boring machine crushes forward against 400 meters of mountain rock.
00:29This freezing system protects the cutting head as the hair-necked tunnel boring machine crushes forward
00:34against 400 meters of mountain rock. Any age, any background, same opportunity, sell, earn, repeat.
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