1. OPEN 2. OPEN 3. CLOSED 4. OPEN 5. OPEN 6. OPEN 7. OPEN 8. CLOSED 9. OPEN 10. CLOSED 11. OPEN 12. OPEN 13. OPEN 14. OPEN 15. OPEN 16. OPEN 17. OPEN 18. OPEN 19. MINE 20. CLOSED 21. OPEN 22. OPEN 23. CLOSED 24. OPEN 25. OPEN 26. OPEN 27. OPEN 28. OPEN 29. OPEN 30. OPEN 31. OPEN