NEW YORK — A fire at Inmetco, a subsidiary of Horsehead Holding Corp. that recycles nickel, chromium, iron, molybdenum and cadmium-bearing wastes, could extend a planned maintenance shutdown at the Ellwood City, Pa., plant for a few days beyond a Nov. 14 deadline, Horsehead president and chief executive officer Jim Hensler said in a statement on the company’s third-quarter earnings results.

Damage from the blaze, which occurred in the material preparation and blending section of the plant as it was entering the annual maintenance shutdown of its rotary hearth furnace and submerged-arc furnace, will likely exceed the company’s insurance deductible of $500,000, the Pittsburgh-based company said.

A spokesman told AMM Tuesday that the company still expects to restart the plant by mid-November.

Horsehead didn’t return a request for further comment.