"Comminution consumes 14% of all electricity generated in Australia, and up to 4% world-wide"
(Fuerstenau, Berkeley University, 2003)
and it is "responsible for 50% of total mineral processing costs"
"… the problem of inefficient use of energy in comminution was so serious that new technology that makes possible comminution to minus 200 mesh (74micron) at half the energy requirement of conventional mills would justify a Nobel prize for service to mankind."
Alban Lynch and Don McKee (1981)