The chart shows that, assuming an average surface of 20,000 square meters, the revolutionary ENVIROBOT® M4000 process requires significantly fewer resources, produces less waste and can be completed in half the time of a normal grit blasting job. Grit blasting is assumed to require a crew of 20 men, utilinzing grit at a rate of 50 kg/m². Robotic hydroblasting is assumed to employ two ENVIROBOT® units, each requiring a crew of 3 people to operate.