  H10224/86--OPR-C121-WH-86; AN OBSTRUCTION, DETERMINED TO BE ì
DEBRIS; CONSISTS OF A LARGE CONCRETE SLAB (10 FT LONG, 3 FT ì
WIDE AND 2 FT THICK), STICKING OUT OF A PILE OF SMALL ROCKS, BRICKS ì
WOODEN TIMBERS, CABLE, PIECES OF METAL AND ASSORTED RUB