A ignition occurred on the 6-mains section, approx. 65 feet in 24 block, 1 entry. Shuttle car was loaded from this cut and ee was trimming the top before the second shuttle car arrived. EE seen an orange ball that started on the curtain side of the miner head. He put his head down and when he looked back up, it was gone. Bits striking sandstone appeared to be the was cause