"Bentonite" means a clay which consists of a majority of montmorillonite which expands by absorbing water and is designed to add viscosity to drilling fluids or to create a seal of low hydraulic conductivity.
N.H. Admin. Code § We 101.05
#4730, eff 1-15-90; ss by #4898, eff 8-13-90; EXPIRED: 8-13-96
New. #6327, INTERIM, eff 8-24-96, EXPIRED: 12-22-96
New. #6448, eff 1-29-97; ss by #7306, eff 6-13-00; ss by #9177, eff 6-13-08