Standard rock fragment classes used with STATSGO data

	    Class Code	  Class Abbrev.	     Description
					  
		 0	      ND	     No data
		 1	      BY	     Bouldery
		 2	      CB	     Cobbly
		 3	      CN	     Channery
		 4	      CR	     Cherty
		 5	      FL	     Flaggy
		 6	      GR	     Gravelly
		 7	      RB	     Rubbly
		 8	      SH	     Shaly
		 9	      ST	     Stony
		10	      SY	     Slaty
		11	      OM	     Organic Materials
		12	      W		     Water
		13	      BR	     Bedrock
		14	      NRF	     No Rock Fragments
		15	      O		     Other