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t. <br />WEED CONTROL PLAN <br />FOR <br />RUSSIAN KNAPWEED <br />(ACROPTILON OR CENTAUREA REPENS) <br />AND <br />CANADA THISTLE <br />(CIRSIUM ARVENSE) <br />MESITA HILL MINE <br />COSTILLA COUNTY, COLORADO <br />Prepared for: <br />Hecla Mining Company <br />6500 N. Mineral Drive, Suite 200 <br />Coeur d'Alene, Idaho 83815-9408 <br />Prepared by: <br />Bamberg Ecological <br />3308 E Geddes Dr. <br />Centennial, CO 80122 <br />JANUARY 2006