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7 <br />The Denver & Rio Grande (D&RG) Railroad Company had developed lines from Denver <br />to Pueblo using narrow gauge lines, the first in the U.S., in the early 1870s. This technology <br />reduced building costs and allowed for greater climbing ability. Additionally, in 1872 the D&RG <br />installed the first air brakes onto their locomotives in anticipation of mountain lines. Later that <br />year, the D&RG built a line from Pueblo to the coal fields just west of Florence, further up the <br />Arkansas River Valley. This line fed the smelting and steel industries in Pueblo. Because the <br />company could no longer fund construction efforts, one of its construction subsidiaries took over <br />the line for two years (Fraser and Strand 1997). In 1884, the line from Florence to Canon City <br />was completed by the D&RG Railroad. <br />Previous Work <br />A files search was conducted over the Colorado OAHP database for previous work in the <br />project area and any cultural resources previously found. One inventory (FN.AE.RI) was <br />previously performed in the area, conducted in 1978 by Fort Lewis College for the Department of <br />the Army. <br />Five sites were found in the sections searched. These include four historic sites and one <br />multicomponent site. The historic sites include three associated with mining (SFN704, SFN705, <br />SFN714), and one foundation with an associated trash scatter (SFN153). Two of the sites <br />• (SFN153, SFN714) were unevaluated and are recommended as needs data; the other two sites <br />(SFN704, SFN705) are both recommended not eligible with OAHP concurrence. The fifth site <br />(SFN152) is a multicomponent site consisting of an old railroad grade and a prehistoric open <br />camp. It was recommended to be not eligible for inclusion on the NRHP. None of these sites are <br />within the current project boundaries. <br />Statement of Objectives/Research Design <br />Following state and federal policies and regulations implementing the National Historic <br />Preservation Act (Public Law 89-665) as amended, the project area was inventoried to identify <br />any cultural resources within the area of potential effect (APE) for the proposed facilities. In <br />effect, the footprint of the surface facilities was inventoried utilizing an intensive survey <br />methodology, described below, as required by law. Additionally, the area sensitive to subsidence <br />as identified by Environmental Alternatives, Inc., was surveyed utilizing a reconnaissance <br />methodology, also described below, that concentrated on the discovery of certain types of sites <br />located in these subsidence sensitive zones. This reconnaissance was conducted by agreement <br />with the client as dictated by their consultation with the oversight agency, the Federal Division of <br />Reclamation and Mining Safety. Any discovered cultural resources were to be evaluated for <br />eligibility to the NRHP under the Criteria for Eligibility (36 CFR §60.4). Register eligibility is <br />evaluated in terms of the integrity of the resource; its association with significant persons, events, <br />or patterns in history or prehistory; its engineering, artistic, or architectural values; or its <br />. information potential relative to important research questions in history or prehistory. <br />