Soil Attributes for Spearfish data set are based on information 
published in the 

 LAWRENCE COUNTY, SOUTH DAKOTA Soils Survey, August 1979, USDA, NRCS.

#55 categories - Soils map of SPEARFISH sample data set for GRASS GIS
The first letter always capital is the initial letter of the soil name.  The
second letter is a capital if the mapping unit is broadly defined; otherwise, 
it is a small letter.  The third letter, always a capital, A, B, C, D, E or F,
indicates the slope.  Symbols without slope letter are those of mapping units
that do not have slope as part of the name.

-------------cut here------------------------------------------------
0.00 0.00 0.00 0.00
0:no data:
1:AaB:Alice fine sandy loam, 0 to 6
2:Ba:Barnum silt loam
3:Bb:Barnum silt loam, channeled
4:BcB:Boneek silt loam, 2 to 6
5:BcC:Boneek silt loam, 6 to 9
6:BeE:Butche stony loam, 6 to 50
7:BhE:Butche rock outcrop complex, 25 to 50
8:BkD:Butche Satanta loams, 6 to 25
9:CBE:Citadel association, hilly
10:CaD:Canyon-Bridget complex, 6 to 25
11:CaE:Canyon-Bridget complex, 9 to 50
12:Cc:Dumps,mine
13:GBE:Grizzly-Virkula association, steep
14:GaD:Glenberg Variant fine sandy loam
15:GcD:Grummit-Rock outcrop complex, 3 to 20
16:GdE:Grummit-Rock outcrop complex, 15 to 50
17:GeD:Gypnevee-Rekop loams, 6 to 25
18:HBF:Hisega-Rock outcrop association, steep
19:Ha:Higgins silt loam
20:KaB:Kyle clay, 2 to 6
21:LaE:Lakoa silt loam, 25 to 50
22:MaC:Maitland loam, 2 to 9
23:MaD:Maitland loam, 9 to 50
24:McD:Midway-Razor silty clay loams, 6 to 25
25:NaB:Nevee silt loam, 2 to 6
26:NaC:Nevee silt loam, 6 to 9
27:Nac:Nevee silt loam, 6 to 9
28:NbD:Nevee-Spearfish-Rock outcrop complex, 9 to 40
29:NcD:Nihill gravelly loam, 6 to 25
30:NdB:Nunn clay loam, 2 to 6
31:NdC:Nunn clay loam, 6 to 9
32:PbE:Paunsaugunt-Rock outcrop complex, 6 to 50
33:PcB:Pierre clay, 2 to 6
34:PcD:Pierre clay, 6 to 25
35:Pe:Pits, quarry
36:RBF:Rock outcrop-Pactola association, steep
37:RCF:Rock outcrop-Vanocker association, very steep
38:RaE:Rekop-Gypnevee-Rock outcrop complex, 15 to 50
39:SaA:Satanta loam, 0 to 2
40:SaB:Satanta loam, 2 to 6
41:SbB:Savo silt loam, 2 to 6
42:Sd:Stetter Variant silty clay loam
43:ShA:St. Onge loam, 0 to 2
44:Sk:Swint silt loam
45:TaA:Tilford silt loam, 0 to 2
46:TaB:Tilford silt loam, 2 to 6
47:TaC:Tilford silt loam, 6 to 9
48:VBF:Vanocker-Citadel association, steep
49:VCE:Virkula association, hilly
50:VaA:Vale silt loam, 0 to 2
51:VaB:Vale silt loam, 2 to 6
52:VaC:Vale silt loam, 6 to 9
53:WaA:Weber loam, 0 to 2
54:Wb:Winetti cobbly loam
55:water