======================+===============================================+ | BITUMINOUS COALS. | +-----------------------------------------------+ | Wilkeson Field, Washington Territory. | +-----+-----+-----+-----+-----+-----+-----------+ | | | | | Altered by| | | | | | | | Intrusive | | | | | | | | Rocks. | | | | | | | +-----+-----+ | | | M | N | O | P | Q | R | S | T | ----------------------+-----+-----+-----+-----+-----+-----+-----+-----+ Original Sample No. | 12 | 125 | 17 | 64 | 37 | 136 | 135 | 68 | ----------------------+-----+-----+-----+-----+-----+-----+-----+-----+ Moisture | 1.80| 3.98| 1.33| 1.16| 1.54| 0.61| 0.44| 2.56| Volatile Hydro-Carbons|42.27|28.64|25.88|29.09|28.17|29.58| 5.84| 8.43| Fixed Carbon |52.11|54.10|60.67|60.38|59.70|56.18|73.98|83.27| Ash | 3.82|13.28|12.12| 9.37|10.59|13.63|19.74| 5.74| F. C.--V. H. C. | 1.23| 1.88| 2.34| 2.07| 2.12| 1.89|12.67| 9.87| | | | | | | | | | Coke | Very| None| Exc | Exc | Poor| B&F | None| None| | good| [D] | | | [E] | | | | ======================+=====+=====+=====+=====+=====+=====+=====+=====+ [D] Produced first-class coke in field test. [E] Produced first-class coke in field test. NOTE.--G. R. C.--Green River column. W. C.--Wilkeson column. B. B. C.--Busy Brook column. [Sidenote: The different mines.] In my brief sketches, I shall group the coal-beds as follows: _a_, Carbon River Group; _b_, the Green River Group; _c_, Cedar River Group; _d_, the Squak, Raging River, and Snoqualmie Groups; _e_, the Yakima and Wenatchie Group; _f_, Bellingham Bay, Skagit River, etc.; _g_, British Columbia Group. [Sidenote: Anthracite, coking and gas coals.] _a. Carbon River Group._--These beds lie on South Prairie Creek and Carbon River, tributaries of the Puyallup River. Anthracite coal in thin beds is reported high up on Carbon River, near the base of Mount Ranier; the result of metamorphism. Also undeveloped outcrops of soft coal at numerous points on the same river. There are, however, only three collieries at work in this group. One is called the Carbonado mines, which are on the Carbon River. Three miles north, a little east, are the famous Wilkeson mines; and two miles northwest of Wilkeson, are the South Prairie mines, on South Prairie Creek. (See Map.) [Illustration: MAP OF WILKESON COALFIELD]