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• the plant can only be run during warm weather months . At present, <br /> a maximum of six runs per month are being conducted . <br /> Ancillary facilities necessary for the Company ' s operations <br /> have been constructed on site. These include a laboratory and <br /> watchman ' s trailer (permitted in the original permit ) , a fabrication <br /> and equipment maintenance shop, and an office trailer for field <br /> personnel. <br /> Equipment owned or leased by Marathon or its affiliate <br /> Centennial Gold Corporation is also stored or parked on site. <br /> Please refer to Appendix A for a map of the site plan <br /> and disturbance boundary. <br /> 5 . 2 Laboratory Operations <br /> 5 . 21 Cyanide Research. The Company has experimented <br /> with several different assay techniques but the most consistent <br /> and successful results have been obtained by cyaniding 5 pound <br /> to 100 pound samples under controlled laboratory conditions . <br /> The tests are run on a batch basis in a totally enclosed, environ- <br /> mentally secure laboratory. The construction of the laboratory <br /> • utilizes bermed concrete of a height sufficient to contain the <br /> total volume of all fluids stored in the building. Should a <br /> catastrophic event occur, no fluids or hazardous materials could <br /> exit the laboratory. <br /> The laboratory has no continuous drainage system. <br /> The seamless, concrete floor is sloped to centralized sumps . <br /> All sumps are discharged to the cyanide destruction tank, and <br /> solutions chlorinated and pH adjusted prior to disposal into <br /> the laboratory disposal site. <br /> A maximum of 36 cyanide tests per week can be conducted. <br /> Each test uses approximately 125 to 180 grams of sodium cyanide. <br /> Weekly maximum cyanide consumption is about 7200 grams, or roughly <br /> 16 pounds. A maximum of approximately 4 , 000 pounds of ore samples <br /> can be analyzed per week . On an annual basis some 600 tests <br /> are expected to be run consuming a total of 170 pounds of cyanide <br /> per year contained in less than 30 tons of lab samples. <br /> The cyanide tests are run at a pH of 11 . 5 ( lime adjusted) <br /> in 6 . 5 ft3 cement mixers. A solution to ore ratio ranging from <br /> 1 :1 to 3 : 1 is utilized. At the end of each test, the solutions <br /> are alkaline chlorinated with calcium hypochlorite ( swimming <br /> pool bleach) at a pH of 11. 0+. . The cyanide is fully oxidized <br /> by using a 4 : 1 oxidizer to CN- ratio. In order to eliminate <br /> the last vestiges of cyanide, complexed or otherwise, the solution <br /> • <br /> 3 <br />