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Mining and Water

Mining and Water. Oil-shale is the most valuable mineral in Estonia. For years people have produced energy from oil-shale. Energy for getting light and warmth: first lamp-oil, then fuel oil, now electricity- a universal energy source. Estonian Oil-shale.

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Mining and Water

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  1. Mining and Water Oil-shale is the most valuable mineral in Estonia. For years people have produced energy from oil-shale. Energy for getting light and warmth: first lamp-oil, then fuel oil, now electricity- a universal energy source.

  2. Estonian Oil-shale • The determined mining of oil-shale has beenextended over 80 years and more than 900 million tons have been excavated. • Oil-shale is raw material for fossil fuel and chemical industry. By dry distillation a lot of oil is produced. Gas and some sulphur compounds can be produced from oil-shale. • Oil-shale is taken for an energetic ressource in more than 50 countries, but only some of them,including Estonia, have mineral deposits worth of mining.

  3. Mines and Opencasts in Ida-Viru • Estonia Mine • Viru Mine • Aidu Opencast • Narva Opencast

  4. POSITIVE*good incomes*producing warmth and electricity NEGATIVE*polluting environment*reduced subsoilwater, empty underground Mining- Positive and Negative

  5. Dangers in Mining Areas When underground is empty after excavating,the ground starts sinking.Consequences: fields and valleys with waving surface and unexpectably appearing deep holes on roads and fields. Building houses there is impossible,which is obstructing for developing communities. In Ida-Viru County such communities are called oil-shale communities. Illuka is one of them. On the territory of Illuka there are 2 mines: Estonia and Ahtme (Ahtme is closed).

  6. Mining and Subsoil Water • Because of mining oil-shale, the surface level of subsoil water has lowered. • Oil-shale mining pollutes subsoil water. • Excavating 1 ton oil-shale needs 10-15 tons of water pumped out from the ground.

  7. The Level of Subsoil water • During the mining the water level lowers. • When mining is completed, the closed mines become filled with water and the level of subsoil water possibly can be restored,but this is not certain.

  8. Wells on Mining Territories • Wells in many households are empty because of mining work • New 38 m deep artesian wells are dug • When the mine lies near the household, deep water wells are dug and water supply is built. • In some cases the mine supplies people with water, bringing it with lorries.

  9. Conclusion • Oil-shale mining has both advantages and disadvantages.For saving the nature and environment,the best possible ways need to be chosen.

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