ROCKY MOUNTAIN MINE TIMBERS. 



13 



same basis 6 board feet were considered equivalent to 1 cubic foot 

 of round timber and 500 board feet to a cord. 



Table 5 is compiled from Forest Service Circular 49 for purposes 

 of comparison. Table 6 gives similar data obtained for 191 l. The 

 two tables are not directly comparable, however, since the propor- 

 tion of timber used by the mines reporting, to the whole consumption 

 in the State, is not definitely known in either case. 



PRODUCTION OF MINE TIMBERS IN COLORADO. 



A study of timber products was made in Colorado for the year 

 1911, and this furnishes some basis for an estimate of the probable 

 total consumption of timber by the mines, including both round and 

 sawed forms. The total production, including lumber, crossties, 

 mine timbers, poles, fuel, and farm timbers, on the basis of the re- 

 ports of the national forest supervisors, for both Government and 

 private lands, was 222,808,000 board feet. The total production of 

 round mine timbers was 36,274,000 board feet. The consumption 

 reported, as shown in Table 6, was 17,460,000 feet of round material 

 and 7,406,000 feet of sawed lumber. If the figure for production 

 may be assumed as approximately correct for the actual total con- 

 sumption and the proportion between the amounts of sawed and 

 round forms reported holds for the total consumption, the total 

 sawed timber used in the mines would be 15,370,000 feet and the 

 total timber, round and sawed, would be 51,644,000 feet. This rep- 

 resents close to $1,250,000 in total value and 23 per cent of all the 

 timber produced in the State. 



PRODUCTION BY SPECD3S. 



The relative amounts of the different species used could not be 

 obtained from the reports submitted by the mine operators. Based 

 upon production, however, a close estimate is given in Table 7. The 

 local names for certain species are different from those adopted 

 by the Forest Service, and in order to make clear what woods are 

 referred to, the scientific name, the common name used by the Forest 

 Service, and the name used locally in Colorado are given below: 



Scientific name. 



Pinus contorta. 

 Pinus ponderosa 



Pinus flexilis. 

 Pinus aristata. 

 Pseudotsuga taxifolia. 

 Picea engelmanni. 

 Picea parryana. 

 Abies lasiocarpa. 

 Abies concolor. 

 Populus treniuloides. 



Common name used by 

 Forest Service. 



Lodgepole pine. 

 Western yellow pine. 



Limber pine. 

 Bristle-cone pine. 

 Douglas fir. 

 Engelmann spruce. 

 Blue spruce. 

 Alpine fir. 

 White fir. 

 Aspen. 



Common name used locally. 



White pine. 

 Black jack 

 pine. 



Fox-tail pine. 

 Red spruce. 

 White spruce. 

 Water spruce. 

 Balsam. 

 Black balsam. 

 Quaking-asp. 



and yellow 



