Dames & Moore, 1999 - USDA Forest Service

The campground is used by backpackers and visitors to the area. An abandoned road and bridge crossing,
which likely provided access to the mill area and Honeymoon Heights, exists to the southeast of the
campground. Based on field observations, it appears that waste rock may have been used as road ballast
during the road construction. No distressed vegetation was observed in the area. A monitoring well
(HBKG-2) was observed adjacent to the road.
4.1.2.8 Honeymoon Heights
Referring to Figure 4.1-3, the Honeymoon Heights area is situated to the south and west of the mill building
and tailings piles. The area consists of six mine portals, starting from the lower levels and progressing
upward, at the 1 100, 1000, 800,700,550, and 300 levels. These mine portals were apparently not used after
the main access and ventilator tunnels were established at the 1500 level in 1937 by Howe Sound Company.
Mine rock piles are associated with all of the mine portals. The Honeymoon Heights mine workings were
apparently not utilized for fill-scale ore removal and transport, but, primarily for exploratory purposes. The
total quantity of waste rock at the portals of these workings appears to be significantly less than for either
the west or eait waste rock piles near the abandoned mill facility.
An abandoned road generally connects the rock piles in the Honeymoon Heights area with the road that runs
to the 1500-level main mine portal; the road is maintained as a hiking trail by Holden Village. A system of
mostly abandoned trails, apparently utilized by the miners, exists throughout the area to access the different
mine portals.
An abandoned mining camp is situated near the 1 100-level portal; several decomposed wood buildings and
stone foundations remain in the area. Isolated remnants of the mining operations dating back to the late
1800s and early 1900s in the areas of the mine openings, including metal tracks for ore cars, cables
associated with a pre-existing tram system which connected the 1100 level to a location near the existing
ballfield area, a water storage tank, and other miscellaneous items were observed. Several other shallow
mine workings are present southwest of the abandoned Honeymoon Heights village and are documented to
not be associated with Howe Sound Company; the workings were established by a former associate of J.H.
Holden by the hame of Patterson; the workings are not connected to the Holden Mine underground network
(Adams, 1981). Several exploratory adits exist along the strike of the ore body exposed at the surface; all of
these workings are shallow, exploratory in nature, and are not connected to the underground mine system.
4.1.3 Site Subsurface Features I
4.1.3.1 Underground Mine Workings
Due to safety concerns, the underground mine was not physically accessed during the RI. However, an
assessment of the mine maps generated during and after the mine operation was conducted. The dates of the
mine maps ranged from as early as 1908 to 1957, at the time of closure.
The maps indicated a total of 14 primary mine levels, and approximately the same number of secondary
levels. Referling to Figure 4.1-5b, two cross-sections have been developed through the underground mine;
cross-section H-H' is parallel to the strike of the ore body, and cross-section I-I' is perpendicular to the strike
of the ore body. Figure 4.1-5c displays Section H-H' and shows the extent and condition of the underground
mined openings; or "stapes," as well as the geology described in Section 4.2.3.2. Figure 4.1-5d displays
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