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2011-06-20_REVISION - M1990057
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2011-06-20_REVISION - M1990057
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Last modified
6/16/2021 6:12:51 PM
Creation date
6/27/2011 8:15:04 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1990057
IBM Index Class Name
REVISION
Doc Date
6/20/2011
Doc Name
Second copy of TR-03
From
The Union Milling Company
To
DRMS
Type & Sequence
TR3
Email Name
DMC
Media Type
D
Archive
No
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TR insert to EXHIBIT C — MINING PLAN <br />Note: There are 21 pages are replacement pages. Immediately following Exhibit <br />C — MINING PLAN is the MILLING PLAN. The MILLING PLAN, MILL SITE <br />section, MILL DESIGN AND CAPACITY section, MILL FEED — RoM ORE <br />section, MILL CONCENTRATES section, TAILINGS COMPOSITION section, <br />MILL UTILITIES section, and TAILINGS DISPOSAL section are inserted <br />between the end of the MINING PLAN and the beginning of the DUST <br />CONTROL section of the MILLING PLAN. <br />A more detailed description immediately follows below. <br />A Lake County Conditional Use Permit for the mine was granted on December 2, 1987. A Copy of this permit is <br />part of this application. No ore will be processed at the mine site. Processing for mineral extraction will occur at <br />our mill site located 6.1 miles west of the mine. (See Milling Plan) <br />MILLING PLAN <br />The mill site is a separate, stand -alone facility with no mining operations on or immediately adjacent to the facility. <br />All ore is trucked to the facility and all concentrates are trucked to a smelter. Mill tailings are stored onsite. <br />Text continues <br />MILL SITE (Replaces ENVIRONMENTAL CONCERN) <br />The mill is scheduled to recommence operations in August 2011 and the existing facility, with reconstructed TSF <br />tailings impoundment dams, has sufficient tailings capacity to operate approximately 4 years at 160st/d (assuming <br />no tailings backhaul). The life of the mill is constrained by the 110 permit maximum disturbance and a 2 -lift Phase <br />1 and Phase 2 TSF pond. Further expansion or Phases will require a 112 permit. <br />Text continues <br />MILL DESIGN AND CAPACITY (Replacement Section) <br />The mill is a classic concentration plant design incorporating crushing, grinding, classification, flotation and <br />filtration circuits that is comprised of vintage equipment. Tails from the operation report to the tailings pond. <br />Process water is reclaimed for reuse in the process. <br />Text continues <br />MILL FEED — RoM ORE (New Section) <br />The mill receives RoM ore from the Cross Mine in Nederland, CO. Table C -6 presents the ore composition for <br />individual veins and a composite of all the veins. Table C -7 presents the metal content for the same veins. Table C- <br />8 and C -9 present the <br />Text continues <br />MILL CONCENTRATES (New Section) <br />The mill product is a single concentrate shipped to a smelter. Table C -10 presents the metal concentrate of the <br />product based on the Cross Mine ore feed. Mass pull is 11% to the concentrate. <br />Text continues <br />M1990 -057 June 6, 2011 <br />
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