Casino mine tailings dam
The Casino Mining Corporation is proposing to build an earth-fill dam to contain nearly a billion tonnes of tailings, covered by water. About 20 per cent of those tailings will be potentially acid. CASINO PROJECT: INTERACTIVE DESIGN OF A LARGE TAILINGS DAM TO ACHIEVE MINE WASTE MANAGEMENT OBJECTIVES Sanne Brinkman, Knight Piésold Ltd., Vancouver, B.C., Canada Graham R. Greenaway P. Eng., Knight Piésold Ltd., Vancouver, B.C., Canada ABSTRACT: The Casino Project is a proposed copper-gold-molybdenum mine in the southwest Yukon. Structure. Unlike water retention dams, a tailings dam is raised in succession throughout the life of the particular mine. Typically, a base or starter dam is constructed, and as it fills with a mixture of tailings and water, it is raised.
Most Read. Previous story Downtown businesses remain strong: city report. He has particular expertise in the selection of appropriate prediction methods for mine planning and modeling of leachate chemistry. Mariana , Minas Gerais , Brazil. West-Sells says the relationships are positive and have been nurtured since the company first acquired Casino in
Another recent positive push for the Yukon was the announcement of federal funding in September for the Northern Resource Gateway project, which is aimed at improving access to the key, mineral-rich areas of the Dawson Range and Nahanni Range. Casino, located km northwest of Carmacks, would benefit from a government-funded upgrade of the road from Carmacks to about halfway to the project. Originally, the project was being reviewed at the executive committee level.
According to YESAB, a panel level review is established in cases where a project may have significant adverse effects, are likely to cause significant public concern, or involve the use of controversial technology.
Casino would be the biggest mine ever built in the Yukon, and one of the biggest in Canada. And as a typical large, low grade porphyry, the open-pit mine would leave behind a lot of waste rock and tailings. The deposit hosts proven and probable millable reserves, not including heap-leachable reserves, of million tonnes grading 0.
Its tailings pond, as envisioned in the feasibility study, would cover 11 sq. Two different processes are under way exploring how to do that. West-Sells says the process will be successful if all parties can reach a consensus agreement on the best technology to use to deal with tailings and mine waste at Casino. While the panel said the original plan was fine, its members did make recommendations on how to reduce the amount of water stored in the tailings dam.
Отжарил птушницу в туалете, поэксплуатировав тело молодой девчонки в разных позициях. кроме ее чулок на ней больше ничего не. Она была слишком горькая и какая-то терпкая. She rocked, as Jeff drove his two fingers deep into her crotch.
Милая телочка обожающая оргазмы каждый день надевает на себя сексуальное белье или трусики с чулками, а потом медленно раздевается наблюдая за. Она родная сестра жены и ей 56 годиков потому и баба, пьем чай. Я ответил, что мы скорее бисексуальные свингеры и нам нужны бисексуальные партнеры, на что он ответил, что таким и является.
The president of Casino Mining Corporation says the company is looking at a new design for its tailings pond that would reduce the amount of water behind the dam. Paul West-Sells said using less water should reduce the environmental impact of a spill. As originally proposed, the dam would have been the highest tailings dam in the world, and the pond would have covered 11 square kilometres. Otherwise, there would be a risk of a flow of acidic water from the tailings into the environment.
Those guidelines set out an extensive list of information the company must provide before YESAB convenes a panel to review the project. Casino must provide a timeline for its response by Aug. The guidelines include a requirement that Casino look at alternative methods for tailings disposal, including dry stacked tailings.
The company must also analyze the possible impacts of a tailings dam failure. West-Sells said that last requirement marks a change from what was asked of mining companies in the past. Traditionally, he said, proponents just had to show that their tailings dams had a very low chance of failure. But since the Mount Polley tailings dam failed in August and spilled 25 million cubic metres of contaminated water and waste into B.
West-Sells said he hopes to respond to the YESAB guidelines in the second half of , meaning the panel review could start late next year or in early The Food for Fines campaign and transit passes for a refugee family came up at City Hall this week. The girls final will be Vanier and Porter Creek while the boys final will be F.
Collins and Vanier. Contact Maura Forrest at maura. Previous story Downtown businesses remain strong: city report. Next story Yukon government to subsidize spay operations for rural dogs.
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