Riddle Me This Batman

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Across
  1. 2. mechanical breakdown of rocks and minerals
  2. 5. the removal of strips of soil and rock to expose the underlying ore
  3. 7. concentratied accumulations of minerals from which economically valuable materials can be extracted
  4. 8. miners remove the entire top of a mountain with explosives
  5. 9. proportion of soil bases to soil acids
  6. 10. the underlying rock material from which its inorganic components are derived
  7. 13. the process of looking for metals and precious stones in river sediments
  8. 14. mining that occurs below the surface of the Earth
  9. 15. horizontal layers with distinct physical features such as color or texture
  10. 16. the known quantity of a resource that can be economically recovered
  11. 17. the removal of a large volume of material, extraction of the resource, and return of the unwanted material
Down
  1. 1. the breakdown of rocks and minerals by chemical reactions, the dissolving of chemical elements from rocks, or both these processes
  2. 3. the physical removal of rock fragments from a landscape or ecosystem
  3. 4. the average concentration of an element in Earth's crust
  4. 6. the ability of a particular soil to adsorb and release cations
  5. 7. mining technique that creates a large visible pit or hole in the ground
  6. 11. elements with properties that allow them to conduct electricity and heat energy to perform other important function
  7. 12. precipitation high in sulfuric acid and nitric acid from reactions between water vapor and sulfur oxides in the atmosphere
  8. 14. the loss of some or all of the ability of soils to support plant growth