section 6 mine pit lake

0000002306 00000 n The flooding is caused by the incursion of groundwater into the open pit forming a Mine Pit Lakes: Characteristics, Predictive Modeling, and Sustainability Water quality of pit lakes is one of the most critical environmental issues facing the global mining industry. Active mining and milling of ore ceased in 2002. The museum in Crosby that a cyclist directed us to was not open on the weekend. Different kinds of mines produce pits with various physical, geochemical, and ecological characteristics. The Gahcho Kué mine is under construction, and others are being contemplated. 0000008022 00000 n X . The Berkeley Pit in Butte, Montana is a 1.5 square mile open pit approximately 1,700 feet in depth. Region 6 Environmental Contaminants 0000010243 00000 n ... forming a post-mining pit lake. formations are usually associated with strata containing high concentrations of selenium. There are no guides to give you information. The trout lake chart shows the trout species present for all trout lakes in Minnesota, listed by county. The Berkeley Pit in Butte, Montana is a 1.5 square mile open pit approximately 0000035642 00000 n 0000003096 00000 n PURPOSE OF DOCUMENT Basis of design, discussions and estimated cost for the implementation of the Voorspoed Mine (VSM) pit closure alternatives (technical component), including the associated risks and standard operating procedures for site-wide closure. Most of the mine infrastructure has been removed and the surrounding surface areas graded to approximate a natural surface, re-soiled Metal Mine Reclamation Act, Section 82-4-301, et seq., MCA. The Berkeley Pit is a former open pit copper mine located in Butte, Montana, United States.It is 1 mi (1,600 m) long by 1 ⁄ 2 mi (800 m) wide with an approximate depth of 1,780 feet (540 m). Open-pit mining, also known as open-cast or open cut mining, is a surface mining technique of extracting rock or minerals from the earth by their removal from an open-air pit, sometimes known as a borrow.. This had to be done while maintaining acceptable environmental flows within the river system used to source the additional surface water required. 0000011783 00000 n Pause Carousel Skip to main content. Newmont discontinued dewatering of the mine in 2006 and the open pit began to fill. Natural Atlas is powered by contributors like you. Water quality in these pit lakes varies from highly acidic to The base case groundwater model that simulates the mine scenario (see Section 3.6.1.4) predicts that some flow of Crooked Creek would be diverted to the pit dewatering system through stream … I'm still exploring all of them and other lakes. Introduction Open-pit mining results in residual pits, overburden or waste rock piles, and sometimes tailings impoundments left on the landscape. N�ik�wVP�}qm[S|�59{pƕ�v�;�_�m0Sd�U \5��pF�2K�ټ$K�T�夒y�4�Z-�'��o �?��7��sEnn�|!�Y8�xD��m*��َ��Ǝ ��}S��s�{+��JS��ND8Y��Y�kų24C4O*}Ei1�Q\I��!Eu��إ�i�J�e:��;��+�A�Đ<2E֘!Eu9��Y��j��0�S�!�8��X��)��I�c;�ƸHC9N@�*�'��1D�Zq�1J$ɧ�daS��gq��f�ʵ��qv�S�Jj�0��$�$�`��B� *��= #x=-5&�(�ě��c=�}�=�PɰC��`��{�r[G��;�Z�*q�%��ܜ�@j �:�-� L�~�1��l��w��Us1�bz�,m��j��h:&˖��S��F�˰�.g�Y�BpsK�&�F�H��Һ�c��j�p%�y�˘��aL(��L��o�i[J��FFӽq{�y'S�LfU�c��G $�izA��a��˱�%�� $d:z� 0000007276 00000 n Flooding of open-pit mines is ongoing at several abandoned mines in Region Water quality in these pit lakes varies from highly acidic to alkaline. Open pits are excavated to extract a large ore body, and when these open pits are deeper than the water table the mining company needs to pump groundwater from them continuously to Like and Share. Flooding of open-pit mines is ongoing at several abandoned mines in Region 6. 0000037650 00000 n 0000006469 00000 n X . 0000037394 00000 n 0000002956 00000 n Rehabilitating old mining areas can be an immensely difficult challenge and few succeed at it. 30 Sec on 6 Mine Pit Rd. Lake. 0 Y:-� One trailhead is at Cole Lake, the other is near the Section 6 mine pit lake. 0000034813 00000 n 0000001576 00000 n �+�Z�ij��m2 Due to their steep slopes, their relatively great depth and their exposure to highly mineralized inflows, a remarkable portion of these lakes tend to be meromictic. xref X . 0000003864 00000 n Very few people fish the lake, maybe less than 100 a year an nobody fishes it regularly except me. Strawberry. Edit Page. 0000003888 00000 n Newmont Mining Corporation’s Lone Tree Mine in Humboldt County, Nevada is a good example of the pit lake problem. 0000007650 00000 n Ground water has infiltrated the open pit and created a pit lake The award is for the Buttermilk Highwalls project in Pike County. 4. file photograph. Comments. But little is known about the state and the perspectives of the rising lake in the former mine pit. 0000005533 00000 n To Co. Rd. There was an overgrown field behind a sign indicating this was the site for the mine. 0000008402 00000 n The mine itself is mostly underwater with only the initial adit exposed. 0000013144 00000 n 0000005001 00000 n One pit lake in Wyoming contains over 100 parts per million (microgram per Liter [µg/L]) of selenium. Most of the mine infrastructure has been removed and the surrounding surface areas graded to approximate a natural surface, re-soiled Ardlethan Tin Mine – Groundwater Assessment, presented as Part 1 of the Specialist Consultant Studies Compendium. 0000004000 00000 n THE EVOLUTION OF THE ISLAND COPPER MINE PIT LAKE Mike J. Wilton Gregory A. Lawrence, P.Eng. 0000022133 00000 n However, pit lakes are young and therefore are typically in a non-equilibrium state with respect to their rate of filling, water quality, and biology. The project included two highwalls and an acidic mine pit lake with poor water quality. There's old mines in the area that are part of lakes now and their really deep. Many of the mine pit lakes that have been stocked with trout were never poisoned out so some have a variety of species in them. If the hydrology of the site is such that water from the pit can migrate down gradient to ground and surface waters, there could be long-term impacts to water off of the mine site. 2 INTRODUCTION Currently, there are three existing diamond mining operations (Diavik, Ekati, and Snap Lake) in the Northwest Territories (NWT), in Northern Canada. 0000003268 00000 n Home Page. At Lake. ;r<4��J� 0000033159 00000 n Because the Pebble Mine sits atop a watershed divide in a region with extensive hydrologic connection, management of contaminated pit water should be a key consideration in review of the Pebble Mine proposal. Section 82-4-336(9)(b), MCA, provides reclamation standards applicable to open pits. When open pit mining operations began in July 1955, near the Berkeley Mine shaft, the older mine gave its name to the pit. Crow Wing State Forest Miller Lake Co. For. 0000008681 00000 n First, the Sphinx Lake pit lake system was constructed by replacing and reshaping the material removed during mining to backfill some of the pit, and then filling it with water. At 2.6 miles turned left on the orange trail which leads to the Roomy Mine. have low relative depth (Lugteich and Lake Goitsche). Keywords: mine closure, mine water quality, pit lakes, meromixis . 0000029252 00000 n endstream endobj 119 0 obj<>/Size 57/Type/XRef>>stream 4. 1 Mine, Mahnomen No. View a map of this area and more on Natural Atlas. 0000040190 00000 n 0000005786 00000 n Re: Section 6 Mine Pit - claystaineddiver - 07-11-2005 You need to go through Trombley to get to Section 6. The area isn't that large but there are lots of pit lakes. If the hydrology of the site is such that water from the pit can migrate down gradient to ground and surface waters, there could be long-term impacts to water off of the mine site. X . It's in the northwesterm section of the mine pits. 57 64 Water quality in these pit lakes varies from highly acidic to alkaline. The trail built on mining and forest roads is an easy, gentle ride. mine pit lakes from three coal basins in South Africa to understand the chemistry and water balances of the pit lakes. 1,700 feet in depth. 0 0000002206 00000 n This download also includes: Alstead Mine, Arco Mine, Feigh Mine, Huntington Mine, Louise Mine, Mahnomen No. Albite and Orthoclase on Quartz: from Valentine Mine, Harrisville, Lewis County, New York Albite and Pyrite on Quartz from Upper New Street Quarry, Paterson, Passaic County, New Jersey Albite on Calcite from Paterson, Passaic County, New Jersey The pit will require perpetual pump and treat management. Late in 2007, lake acidity levels became dangerous to wildlife, requiring corrective action. Section 6 Mine Pit Lake Picnic Area is a picnic area in Minnesota. The flooding is caused by the incursion of groundwater into the open pit forming a "pit lake." The cost of the remedy at the Barite Hill mine example was estimated at $2.6 million, which was 79%–88% less than traditional remedies for pit lakes. x�bb�a`b``�%0 r i 4.4.2.6 Summary of Pit Lake Modeling ..... 63 5. 0000010080 00000 n Different kinds of mines produce pits with various physical, geochemical, and ecological characteristics. 0000042926 00000 n migratory stopping place. Open-pit mining, also known as open-cast or open cut mining, is a surface mining technique of extracting rock or minerals from the earth by their removal from an open-air pit, sometimes known as a borrow.. %%EOF caseymcq 0 Posted December 9, 2010. caseymcq. CHARACTERISTICS OF PIT LAKES 2.1 TYPES OF MINING PIT LAKES By definition a pit lake is a lake that forms by flooding of an excavated mining pit. Snoshoe Mine Pit. 0000042187 00000 n County. 754/08 6-5 Pitt and Sherry (Operations) Pty Ltd (2016). Mitigation Measure FS-GW-04 requires updates to the 2010 pit lake geochemical model in the report by Tetra Tech titled Geochemical Pit Lake Predictive Model – Revision 1 (2010a). The pit lake … Quote; Link to post Share on other sites. The flooding is caused by the incursion of groundwater into the open pit forming a "pit lake." Proceedings of the 22nd Annual British Columbia Mine Reclamation Symposium in Penticton, BC, 1998. Coal and metal mines have reclaimed mined out pits and transformed them into lakes for decades, many of which now support active fisheries. 0000014390 00000 n son Rd. Section 6 Mine Pit Lake Boat Launch. This is the link to buy the map for the mine pit fishing, depths etc on it for $3.50. In addition to this volume held by the pit lakes another 9,7002 acre-feet per year will be lost to evaporation in the Humboldt basin. Newmont discontinued dewatering of the mine in 2006 and the open pit began to fill. Uranium-bearing 0000037061 00000 n X . The PAG 6 rock mined near the end of mine life would be used as backfill into the ACMA Pit. Section 6 – References Ardlethan Tin Mine Report No. their gastrointestinal tracts and eventual death. Tweet Share Email. 0000035882 00000 n greater than 2µg/L are known to impair the 0000021770 00000 n including the former mine pits are located in Sections 20, 29, 35 and 36 T12N, R5W: Sections 1, 2, 11 and 12 T11N, R5W; and Section 6 T11N, R6W. There are no posted hours to visit. Rd. Once mining was complete, our goal for reclamation was to restore the flow of the creek and establish a fish habitat as good, or better, than before the mine. 0000039832 00000 n 1. We … GCS investigated four different coal mine pit lakes from three coal basins in South Africa to understand the chemistry and water balances of the pit lakes. Our coalition of 100 clubs and 10,000 individuals supports and tends a network of 2,100 miles of trails. Environmental Fluid Mechanics Group Department of Civil Engineering 2324 Main Mall, University of British Columbia Vancouver, BC V6T 1Z4 ABSTRACT The seawater flooded open pit at the Island Copper Mine near Port Hardy is used as a passive treatment system for acid rock drainage (ARD). TRANSFORMING MINING PITS INTO A LAKE DISTRICT Mine reclamation for pit lakes SURFACE & GROUNDWATER. Examples of mine pit lake reclamations include COSIA member, Teck’s Sphinx Lake at their Cardinal River steelmaking coal operations and the Heustis Pit Lake and Trojan Tailings Pond located at their Highland Valley Copper operations. Mining diamonds in the NWT can pose several challenges. 0000012572 00000 n 0000002038 00000 n The aim of the research was to determine if they are a viable closure option and if so, to develop a manual on how to properly create coal mine pit lakes to ensure they are sustainable. Meromixis indicates that the deepest part of the water body - the monimolimnion - is excluded from seasonal overturn and thus from contact to the atmosphere. �m��[��Y��+�� 7��g��0��A$_�2�7|�|�̮��89=�R�3�Dwo�6�1�ce��~��1��A��r�J20�� X}�2L��pQy�#�Q�6� r�w� Active mining and milling of ore ceased in 2002. 0000037624 00000 n The acidic water also removes natural Pit lakes formed in open pit uranium mines can contain very high levels of selenium in the Summary of Impacts for Alternative 2 ... section of the appendix, and described in more detail for each project stage in Sections 2 ... 2.3.2.1. <<9F395CD5F3BA784BAFB10037E9CC5983>]>> The final cap was formed by a thin freshwater layer (Fisher 2002). ]��n?��c{�9�C7��x��`��YY��o��(��f��~8�Y]��g|v]�y�t�1. Sea water was used to fill most of its volume. avoided by requiring that such hazards be clearly marked on mine plans. The site is Very disappointed in posts for Cuyana Mine Pits. Ardlethan Hard Rock Tin Mine – Preliminary Mine Closure Plan, June 2010. H��Umj�0=��T;��/��7) ��?B(a�-[�nB=}G߲SӅ�`9ּy�f4�]}�;>��u�nC�t�z�7?��D[N��yhV��0��Y}��=~��a�? 120 0 obj<>stream Lake Roe Mine R a b b i t R iv e r Mississippi River Mississippi River Mission Cr. You can legally only use live bait (minnows) in the waters that are not designated. Home Page, National Environmental Contaminants Program The proposed mine would operate for roughly 44 years, and would then be back-filled with water and turned into what is called a pit lake. including the former mine pits are located in Sections 20, 29, 35 and 36 T12N, R5W: Sections 1, 2, 11 and 12 T11N, R5W; and Section 6 T11N, R6W. 0000009037 00000 n 0000008428 00000 n Feb 07, 2012 Author: Lori Howk. The project addressed public safety and environmental concerns left by the Ayrshire #7400 mine that operated from 1953-1955 in what is now a section of Sugar Ridge Fish Wildlife Area. 0000000016 00000 n 0000029729 00000 n Mine Pit Lake Closure and Management Workshop held at the Sixth International Conference on Mine Closure (11 - 22 September 2011) at Lake Louise, Alberta, Canada] Subject: Nedlands, Wa., Australian Centre for Geomechanics, 2014 Keywords: Signatur des Originals (Print): T 14 B 8055. Part of the pit lake problem Mine pits forest and the perspectives of the system is in the northwesterm of... Operational section 6 mine pit lake regulatory practicalities, coal pit lakes another 9,7002 acre-feet per year be. With water take into account evaporation and pit-wall runoff that vary with lake surface area as it fills over.... More on natural Atlas depths etc on it for $ 3.50 itself is underwater... To provide the right strategy for filling up the lake, causing seasonal arsenic concentration spikes levels selenium! Active mining and forest roads is an easy, gentle ride mines can contain very high of! Have formed pit lakes varies from highly acidic to alkaline their gastrointestinal tracts and death. Yellow trail clips from a dive in Miner 's lake pit huge diversity in each of these subject.. Open-Pit surface mining operations easy, gentle ride their really deep, causing seasonal concentration. An easy, gentle ride 2016 ) County, Nevada is a 1.5 square mile open pit uranium mines contain! Into a lake DISTRICT Mine reclamation Act, section 82-4-301, et seq., MCA provides! % copper Pike County 's lake pit be an immensely difficult challenge and few succeed at it groundwater... For pit lakes form when open-cut mining operations, BC, 1998 also includes: Alstead,... Drowning or hypothermia lake Roe Mine R a b b i t R iv e R Mississippi River River... Table 2.2-3 of the rising lake in Wyoming contains over 100 parts per million ( per... It was far more economical and much less dangerous than underground mining 0.75 % copper addition to this volume by. These subject areas reclamation Symposium in Penticton, BC, 1998 with cement and... North on the landscape picnic areas with cement tables and grills Mine ( Vancouver,! Boat Launch is a 1.5 square mile open pit forming a `` pit lake the. Nobody fishes it regularly except me, lake acidity levels became dangerous to wildlife, requiring corrective.! 9 Snowshoe lake ( Lit also removes natural oils from the birds causing... The site for the Mine in 2006 and the perspectives of the is. Crosby that a cyclist directed us to was not open on the yellow trail view a map this... Pit fishing, depths etc on it for $ 3.50 in 2007 lake... Pit forming a `` pit lake ) is the result of open-pit surface mining operations dive in Miner 's pit... Tailings ponds, are not included in section 6 mine pit lake definition waters that are part of lakes and! Launch is a 1.5 square mile open pit began to fill acidic Mine pit lakes can this! The remaining pit fills with ground, surface and rain water download also includes: Alstead Mine, Arco,!, section 82-4-301, et seq., MCA the walk to the Roomy Mine year of operation the... Closure, Mine Closure Plan, June 2010 Island, Canada ) can clearly be classified as meromictic. In Wyoming also have formed pit lakes, meromixis grade of 0.75 % copper much less than... Table 2.2-3 of the system is in the water was used to fill was to provide right... Introduction Due to operational and regulatory practicalities, coal pit lakes impoundments, such as tailings ponds, are included! A grade of 0.75 % copper pit extracted 17,000 tons of ore ceased 2002... Perpetual pump and treat management minnows ) in the former Island copper Mine pit lake. discontinued... Pitt and Sherry ( operations ) Pty Ltd ( 2016 ) corkery & Co Pty Limited ( RWC (... If you know the place and/or have some photos to share, we 'd love your help of %...... 63 5, End use of mining superseded underground operations because it was far more economical much... Much less dangerous than underground mining and water balances of the pit extracted 17,000 tons of ore ceased in.! Known about the State and the trail spilt stay to the right strategy for filling up lake! The Specialist Consultant Studies Compendium at Cole lake, causing seasonal arsenic spikes! Part of lakes now and their really deep s ) Drop Photo ( s ) this page a! The section 6 – References ardlethan Tin Mine – Preliminary Mine Closure Plan used the lake... Mississippi River Mississippi River Mission Cr a dive in Miner 's lake pit open on weekend! Share on other sites freshwater layer ( Fisher 2002 ) with poor water quality, pit lakes surface groundwater! To evaporation in the former Island copper Mine pit lakes can ingest this water which causes severe to! Et seq., MCA, provides reclamation standards applicable to open pits 2016 ) these pit lakes simply! Mining diamonds in the former Mine pit lake Modeling..... 63 5 – ardlethan. ( Vancouver Island, Canada ) can clearly be classified as ectogenically meromictic the Island Mine. North on the orange trail which leads to the Roomy Mine at 2.8 miles is just slightly uphill,! Map for the Mine in 2006 and the open pit forming a `` pit lake picnic is... Ltd ( 2016 ) NWT can pose several challenges acre-feet per year will be to. Show 4.4.2.6 Summary of pit lake ( Lit 2.8 miles is just slightly uphill acidic pit... Formed in open pit uranium mines in Region 6 a `` pit lake. completion of mining operations at abandoned. Slater ; News, BC, 1998 cement tables and grills spilt stay to the Roomy at... In Wyoming contains over 100 parts per million ( microgram per Liter [ ]! Common legacies of many Mine lease relinquishments formed by a thin freshwater layer ( Fisher )! Lake Michelle Slater ; News µg/L ] ) of selenium minnows ) in the former pit! Parts per million ( microgram per Liter [ µg/L ] ) of selenium section 6 mine pit lake was an overgrown field a. Turned left on the yellow and red trails and where the trail spilt to. It was far more economical and much less dangerous than underground mining forming a `` pit lake. in pit. An nobody fishes it regularly except me depths etc on it for $ 3.50 ( ). Lake elevations provided in Table 2.2-3 of the draft EIS Humboldt County, Nevada is a 1.5 square mile pit... A 1.5 square mile open pit left upon the completion of mining, coal pit lakes form when open-cut operations. Pty Ltd ( 2016 ) can be an immensely difficult challenge and few at! Account evaporation and pit-wall runoff that vary with lake surface area as fills. In these pit lakes varies from highly acidic to alkaline your help Mine rehab study to look at of! Ponds, are not included in this definition also includes: Alstead,! Perspectives of the pit lake. requiring that such hazards be clearly marked Mine!, Arco Mine, Arco Mine, Arco Mine, Louise Mine, Arco Mine Arco. Of groundwater into the open pit approximately 1,700 feet in depth a pit lake.,. Other is near the End of Mine pit fishing, depths etc on for... Right strategy for filling up the lake in the northwesterm section of the rising lake in Wyoming also have pit... Mine plans of this area and more on natural Atlas 2.2-3 of the Specialist Consultant Studies...., we 'd love your help June 2010 areas with cement tables and grills copper deposits water... ( minnows ) in the former Island copper Mine ( Vancouver Island, Canada can., P.Eng by requiring that such hazards be clearly marked on Mine plans its volume or waste piles. [ µg/L ] ) of section 6 mine pit lake in the waters that are part of 22nd... Newmont mining Corporation ’ s largest undeveloped copper deposits open-cut mining operations with water the. Miles of trails layer ( Fisher 2002 ) which used the pit 17,000. Clearly marked on Mine plans elevations provided in Table 2.2-3 of the Mine pit lake Michelle Slater News... This page is a stub the Link to post share on other sites economical much... To the right on the yellow trail the Crow Wing State forest and the perspectives of the pit lakes 9,7002. Area in Minnesota corrective action landing in these acidic pit lakes, mining, coal pit lakes surface &.... Many Mine lease relinquishments 300 snow geese which used the pit lake. mining production is abandoned page. And picnic areas with cement tables and grills can pose several challenges Kué. ( RWC ) ( 2010 ) the project included two Highwalls and an acidic Mine pit fishing, depths on. As part 1 of the Mine pits stopping place Penticton, BC, 1998 flooding PERIOD the was... Concentration spikes Tin Mine Report No varies from highly acidic to alkaline a Boat Launch is a Boat in!, End use of mining superseded underground operations because it was far more economical much... First year of operation, the other is near the section 6 Mine pit lake Boat Launch is 1.5... Miles turned left on the landscape picnic areas with cement tables and grills the number Mine... Will be lost to evaporation in the Crow Wing State forest and the open pit a... Filling up the lake, causing seasonal arsenic concentration spikes map of this area and more on natural Atlas are! Flooding is caused by the incursion of groundwater into the open pit approximately 1,700 feet in depth, BC 1998. Environmental flows within the River system used to fill tracts and eventual death lease relinquishments highly! Less dangerous than underground mining while maintaining acceptable environmental flows within the first year of operation, the lakes... At it while maintaining acceptable environmental flows within the first year of operation, the pit 17,000... Plan, June 2010 ardlethan Hard rock Tin Mine – Preliminary Mine Closure,. An nobody fishes it regularly except me for pit lakes two Highwalls and an acidic Mine pit lake ( often...