No.57. Cornwall. ([Fig. 45.])
December 11th.
none injured.
Fig. 45.
One tube Cornish, 32ft. long, 6ft. 6in. diameter. Tube 4ft. diameter, 3/8 inch plates, 60 lbs. pressure.
It was an old boiler, and some of the plates of the tube were thinned by corrosion, but it had only just been put to work at this place, and burst the first day of working.
The tube collapsed beyond the bridge, and the back part with the back end plate was blown out to a great distance. The front end was also ruptured, and the whole boiler was sent forwards. The tube over the fire had not collapsed. The cause of explosion was the weakness of such a large tube without strengthening rings.
Many similar boilers have exploded in the same way from the same cause, as described in [No. 28], [No. 30], [No. 35], [No. 40], [No. 54], and [No. 56].
No.58. Cornwall. ([Fig. 46.])