Essays about: "Garpenberg"

Showing result 11 - 15 of 17 essays containing the word Garpenberg.

  1. 11. Closure of Lilla Bredsjön Tailings Dam : an Evaluation of the Long-Term Dam Safety Measures

    University essay from KTH/Vattendragsteknik

    Author : Jenny Bramsäter; [2017]
    Keywords : tailings dams; seepage; pore pressure; slope stability; slip surfaces; long-term stability;

    Abstract : The mining industry contributes to enormous amounts of waste all over the world, which places high demands on tailings dams. In Sweden, there are strict regulations regarding the management and treatment of tailings dams, but some dams that were built before these regulations existed still pose a threat to the environment. READ MORE

  3. 12. Optimal control of clarifier-thickeners

    University essay from Uppsala universitet/Avdelningen för systemteknik

    Author : Sakari Teerikoski; [2017]
    Keywords : clarifier; thickener; modelling; simulation; control; cascade control; settling;

    Abstract : A computer model for a general clarifier-thickener has been made and used for comparing different strategies for control of such dewatering units through simulations. The model builds on widely acknowledged theory for modelling clarifier-thickeners - discretizing the settling PDE into a set of ODEs so that concentrations of solids at discrete depths inside the unit become the states of the numerical model - and it was written in the Modelica language using the modelling and simulation environment Dymola. READ MORE

  4. 13. Boliden Minerals skogsskötsel runt gruvsamhällen

    University essay from SLU/School for Forest Management

    Author : Dennis Sundberg; [2016]
    Keywords : tätortsnära skogsskötsel; gruvorter; glesbygd;

    Abstract : This report presents a questionnaire survey conducted among local residents in three of Boliden Mineral's mining communities. The questions asked to the respondents were oriented to Boliden Mineral's near urban silviculture. READ MORE

  5. 14. Bergsbrukets början, samt dess och jordbrukets påverkan på vegetationen uti Garpenbergs socken i sydöstra Dalarna

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Björn Karlsson; [2014]
    Keywords : Pollen; geokemi; bergsbruk; gruvbrytning; Garpenberg; Bergslagen; vegetationsförändringar; skog; jordbruk; pollen; geochemistry; mining; Sweden; vegetation changes; forest; farming;

    Abstract : Bergsbruket har under lång tid haft stor betydelse för Sverige både ekonomiskt och politiskt. Det har också haft en inverkan på naturmiljön bland annat genom huggningar för bränsle och utsläpp av tungmetaller. Ett av de områden i Sverige som är mest känt för sin metallhantering är Bergslagen. Idag är många gruvor nedlagda. READ MORE

  6. 15. Investigation

    University essay from Lunds universitet/Geoteknik

    Author : Erik Månsson; [2014]
    Keywords : Technology and Engineering;

    Abstract : In mining for extraction of metals residues are often produced. A frequently produced residue is tailings, which potentially contains high amount of metals, soluble salts and acids. Therefore, it is often necessary to deposit, the tailings in stable impoundments, namely tailings dams, if not all tailings produced is used as backfill in mines. READ MORE