The main hoist went out of service at 4:15pm. Upon investigation a hydraulic line fitting blow out was discovered. At 4:40pm the men underground were evacuated to the surface of our #3 shaft. At 4:45pm the hydraulic line and fitting were repaired. At 4:55pm the MSHA 1-800# was called to advise of the situation. The hoist was placed back into service at 5:20pm.