Proximate analyses may be made and reported on a moist or dry basis. The dry basis is that ordinarily accepted, and this is the basis adopted throughout this book. The method of converting from a moist to a dry basis is the same as described in the case of an ultimate analysis. A proximate analysis is easily made, gives information as to the general characteristics of a fuel and of its _relative_ heating value. Table 38 gives the proximate analysis and calorific value of a number of representative coals found in the United States. TABLE 38 APPROXIMATE COMPOSITION AND CALORIFIC VALUE OF CERTAIN TYPICAL AMERICAN COALS ____________________________________________________________________________ | | | | | | | | | | | | No. | State | County | Field, Bed | Mine | Size | | | | or Vein | | | | | | | | | | | | | | | ____|_______|________________|________________|_______________|_____________| | | | | | | ANTHRACITES | | ____|_______|_________________________________________________|_____________| | | | | | | 1 | Pa. | Carbon | Lehigh | Beaver Meadow | | 2 | Pa. | Dauphin | Schuylkill | | Buckwheat | 3 | Pa. | Lackawanna | Wyoming | Belleview | No. 2 Buck. | 4 | Pa. | Lackawanna | Wyoming | Johnson | Culm. | 5 | Pa. | Luzerne | Wyoming | Pittston | No. 2 Buck. | 6 | Pa. | Luzerne | Wyoming | Mammoth | Large | 7 | Pa. | Luzerne | Wyoming | Exeter | Rice | 8 | Pa. | Northumberland | Schuylkill | Treverton | | 9 | Pa. | Schuylkill | Schuylkill | Buck Mountain | | 10 | Pa. | Schuylkill | | York Farm | Buckwheat | 11 | Pa. | | | Victoria | Buckwheat | 12 | Pa. | Carbon | Lehigh | Lehigh & | Buck. & Pea | | | | | Wilkes C. Co. | | 13 | Pa. | Carbon | Lehigh | | Buckwheat | 14 | Pa. | Lackawanna | |Del. & Hud. Co.| No. 1 Buck. | ____|_______|________________|________________|_______________|_____________| | | | |