Keywords: Trimethoxyboroxine (TMB) Fire Extinguisher, circa 1967.jpg en 2 5 gallon Trimethoxyboroxine TMB Fire Extinguisher for magnesium fires made by Ansul in the 1960s for use by the U S Navy 2016-06-05 15 18 24 1967 Airman Manual United States Navy other versions PD-USGov Fire extinguishers |