Antique boiler explosion in Medina, Ohio, July 29, 2001

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8. Crown sheet heavy erosion one (1) thread engagement

9. Crown sheet one (1) thread engagement

10. Crown sheet two (2) thread engagement

11. Crown sheet thickness 0.085" and 0.105"

12. Crown sheet thickness of 0.85" and 0.105"

13. Crown stay bolts in firebox reduced area from 1" to 0.700" and 0.600"

14. Crown stay bolts. Two (2) displaced threads two and less than two threads engagement