Non-polluting process for recovery of precious metal values from

Non-precious ceramic alloy

Non-precious dental alloy

Non-precious dental alloy of Co-Ni-Cr containing Si and B

Non-precious dental casting alloy

Non-precious stainless dental alloy

Non-toxic liquid metal composition for use as a mercury substitu

Nonmagnetic alloy steel having improved machinability

Nonmagnetic steels having low thermal expansion coefficients and

Nonprecious alloy for fusion to porcelain

Novel nonprecious alloy suitable for fusion to porcelain

Nozzle for low pressure flash tanks for ore slurry

Nozzle for low pressure flash tanks for ore slurry

Optimization of bioleaching process

Oven mercury retorting device

Oxidation and sinter-resistant metal powders and pastes

Oxidation and sulfidation resistant austenitic stainless steel

Oxidation inhibition of steel wool in silver recovery

Oxidation of metal sulfides using thermotolerant bacteria

Oxidation of molten ferrophosphorous