AN EXTENSION OF A FALL REPORTED 1-19-00 WAS DISCOVERED 4-25 ON A-4 MAINS. THE FALL EXTENDED AN ADDITIONAL 160 FT DOWN NO. 3 ENTRY THRU THE INTERSECTION AT SURVEY STATION NO. 1004 THRU THE 3-4 CROSSCUT AND NO. 4 INTERSECTION. THE TOTAL FALL EXTENDED APPROX 240 FT LONG BY 18 FT WIDE BY 7-9FT HIGH. THE FALL HAD BEEN DANGERED OFF.