| Boulder | South Platte | Lafayette | Mine run | 63 | Col. | Boulder | Laramie | Simson | Mine run | 64 | Col. | Fremont | Canon City | Chandler | Nut and | | | | | | Slack | 65 | Col. | Las Animas | Trinidad | Hastings | Nut | 66 | Col. | Las Animas | Trinidad | Moreley | Slack | 67 | Col. | Routt | Yampa | Oak Creek | | 68 | Ill. | Christian | Pana | Penwell Col. | Lump | 69 | Ill. | Franklin | No. 6 | Benton | Egg | 70 | Ill. | Franklin | Big Muddy | Zeigler | ¾ inch | 71 | Ill. | Jackson | Big Muddy | | | 72 | Ill. | La Salle | Streator | | | 73 | Ill. | La Salle | Streator | Marseilles | Mine run | 74 | Ill. | Macoupin | Nilwood | Mine No. 2 | Screenings | 75 | Ill. | Macoupin | Mt. Olive | Mine No. 2 | Mine run | 76 | Ill. | Madison | Belleville | Donk Bros. | Lump | 77 | Ill. | Madison | Glen Carbon | | Mine run | 78 | Ill. | Marion | | Odin | Lump | 79 | Ill. | Mercer | Gilchrist | | Screenings | 80 | Ill. | Montgomery | Pana or No. 5 | Coffeen | Mine run | 81 | Ill. | Peoria | No. 5 | Empire | | 82 | Ill. | Perry | Du Quoin | Number 1 | Screenings | ____|_______|________________|________________|_______________|_____________| APPROXIMATE COMPOSITION AND CALORIFIC VALUE OF CERTAIN TYPICAL AMERICAN COALS--Continued