Vegetation Riparian vegetation on the banks of Boulder Creek defines the southern edge of the site. The vegetation provides a visual barrier that separates the site from the residential community on the southern bank. The vegetation on Boulder Creek's banks is typical of riparian areas in the region. Two prominent trees date from the period of significance remain—a Plains Cottonwood (80-inch DBH) and a large willow (60-inch DBH). 27 These trees contribute to the significance of Boyd Smelter/ Mill Site. Chokecherry shrubs may be a historic vegetation type, but no groupings were identified as contributing. 28 The open level space between Boulder Creek and Canyon Boulevard is covered in tall native grasses interspersed with fruit trees (crabapple and apple), evergreens trees (pinyon and ponderosa), and deciduous trees (box elder, elm and cottonwood). The open, level space and embankments of Boulder Creek historically had less vegetation due to smelting and mining operations. The existing vegetation has changed in the open level area and does not contribute to the significance of the site. Views and Viewsheds The site features a prominent view to Boulder Canyon, which has become less prominent due to growth of trees on the site. The view between the upper level area of the site to Boulder Creek has changed due to understory and tree growth.
Figure 1-9. Boyd Smelter's smoke stack (left of the railroad tracks), Boulder Canyon beyond, BHS 219-1-52 (source: Carnegie Library for Local History)
Figure 1-10. Boyd Smelter/Mill Site, no date (source: Carnegie Branch Library for Local History)
Figure 1-11. Boyd Smelter/Mill Site, 2020 (source: Mundus Bishop)
27 Mundus Bishop, Boyd Smelter Site , 7. 28 Smith, Cultural Resource Survey , 4.
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Boyd Smelter/Mill Site
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