INSPEC24329 - Laserfiche WebLink

Home Browse Search

(Page 2) MINE ID # OR PROSPECTING ID # M-90-057 INSPECTION DATE 09/28/01 INSPECTOR'S INITIALS ESC This was an inspection of the Hopemore and Leadville Mine conducted by Erica Crosby of the Division of Minerals and Geology. Scott Hazlitt of Leadville Mining and Milling was present during the inspection. No mining was taking place during the inspection. The mine and mill have not been in use for several years. Amine identification sign and permit boundary markers were noted at the Hopemore Shaft site. On February 12, 2001, the operator submitted a map depicting the Hunter Shaft. The letter also includes a description of reclamation adjacent to the Hunter Shaft. The Hunter mine area was mined extensively prior to 1900. Several of the mine workings caved leaving large depressions. The operator deposited White Porphyry material from the fifth and seventh levels in these depressions. The material is classified as quartz latite and is considered inert. Within the past year the operator removed mining equipment and supplies from underground and has stored this material on site. Some of the material is located outside the permit area. The operator will need to ensure that all mining related material and equipment is stored inside the permit boundary. Please see page 4 of this report for compliance due dates. The mill site was also inspected. Permit boundary markers and a mine identification sign were posted. The mill is currently noC in use. The Division required the operator to do an inventory of all chemicals stored on site. The operator submitted the inventory on October 2,2001. The mill site contains the following chemicals as determined by the operator: Inventory for Reagent Room at Mill: • Copper Sulfate (50 lb bags)- 50 bags, 9 pales • Hydrated lime (50 lb bags)- 11 bags • Soda Ash Dense (100 lb bags)- 3 bags • Zinc Sulfate Monohydrate (50 lb bags)- 1.5 bags • MIBC in 50 gallon barrels- 2 barrels • Sodium Silicate in 50 gallon barrels- 1 barrel • Aero Float in 50 gallon barrels- 6 barrels Inventory on fine ore bin deck at Mill: • Soda Ash Dense (100 lb bags)- 38 bags • Grinding Balls in steel barrels- 12 barrels Inventory on main grind deck at Mill: • Sulfur dioxide (5 ft. gas bottle)- 1 compressed gas • Chlorine (5 ft. gas bottle)- 1 compressed gas All chemicals are stored inside the mill, which contains a concrete floor and is locked. The portable lab trailer was also inspected and no stored chemicals were noted. According to the operator, the mill tailings pond contains approximately 1000 tons of washed tailings. This material was deposited from the mill into the pond two years ago. Prior to this disposal, the operator was required to submit compaction results regarding the pond liner. The operator will need to submit these results, or make a written commitment to the Division stating that no additional tailings or mining related material will be disposed of into the pond until the operator can demonstrate that the pond was lined in accordance with the approved plan. The compaction results or this written commitment must be submitted by October 31, 2001.