Here’s the scoop on RockFrac from their website:
Application Scope RockFrac?
NEDA can be applied in various situations:
* Granite, marble, sandstone, limestone, quartzite quarrying and cutting
* Rocks pre-splitting, fracture, cutting, demolishing and removal
* Concrete structures demolition and rocks removal when explosion not allowed
* Fracture and demolition of the concrete buildings and structures
* Rocks cutting for road construction
* Excavation of trenches and foundations
* Underground excavations and removing boulders
( no mention of being used underwater)