The Dam

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Across
  1. 3. In which province is the El Aguilar mine located?
  2. 4. Who knocks on Quiroga's door?
  3. 5. What element will Mr Cruz use to destroy the stone wall?
  4. 6. What is the last name of the protagonists?
  5. 7. What do the boys want to organize on holidays?
  6. 8. Where does Don Quiroga work?
  7. 9. What does Arthur want to do with the dam?
Down
  1. 1. What is the name of the eldest brother?
  2. 2. How are the boys with this dangerous situation?
  3. 5. What are the boys planning to build?