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 1911. 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, cross ties, 
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 SPECIES. 
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 tremuloides. 
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 
