Table 1. - U.S. Coal Resource Databases: USCOAL and NEWCOAL

Table 1. Principal Meridian codes and names.
01	1st Principal	20	Montana Principal
39	1st Scioto River	21	Mount Diablo
02	2nd Principal	37	Muskingum River
40	2nd Scioto River	22	Navajo
03	3rd Principal	23	New Mexico
41	3rd Scioto River	35	Ohio
04	4th Principal	38	Ohio River
05	5th Principal	26	Salt Lake
06	6th Principal	27	San Bernardino
07	Black Hills	28	Seward
08	Boise	24	St. Helena
09	Chickasaw	25	St. Stephens
10	Choctaw	29	Tallahassee
11	Cimarron	43	Twelve Mile Square
12	Copper River	30	Uintah Special
42	Ellicott's Line	45	Umiat
13	Fairbanks	31	Ute
14	Gila and Salt River	32	Washington
15	Humbolt	33	Willamette
16	Huntsville	34	Wind River
17	Indian	96	Principal meridian and base line unknown
44	Kateel River	99	Various principal meridians and base lines
18	Louisiana
19	Michigan