<h1>Mandatory input-output norms set allowable quantities of explosives, reagents and materials per 1 MT zinc concentrate export; entry suspended</h1> Standard input-output norms prescribe allowable quantities of inputs per 1 MT of zinc concentrate exported, listing specified explosives, detonators, drilling equipment, reagents (copper sulphate, zinc sulphate, sodium cyanide, xanthates, MIBC), grinding media and hydrated lime with precise weights/units. The entry is marked suspended by a public notice. A determination governs proportions of inputs required for producing resultant products. Applicants must ensure that imported items match those declared and are actually used or required in the export product, ensuring compliance with the prescribed input-output ratios.