HYDRAULIC PUMP IN THE HITACHI EX1800 EXPLODED & FILLED THE ENGINE COMPARTMENT WITH HYDRAULIC FLUID. WHEN FLUID HIT THE TURBO ON THE ENGINES, FLUID WENT UP IN A BALL OF FIRE. FIRE DESTROYED THE SHOVEL. OPERATOR EXITED THE CAB & SLIPPED ON THE TRACKS SCRAPING HIS HAND. NO MEDICAL TREATMENT WAS GIVEN.