During a stoppage for breakfast, the fire-box end was torn from the barrel, and from the position of those fragments that could be found, the boiler appeared to have turned over. Part of the fire-box was sent through the stage upon which the boiler was travelling, and the barrel with the tubes remaining in it, first struck a rail which caused it to be dented in, and then rebounded to a point about 100 yards from its original position. Enough of the fragments were not recovered from the river to trace the cause of the explosion, but it is presumed that, although when the boiler was left, only 20 lbs. pressure was shown by the gauge; the fire door being left closed, the pressure must have risen to a point much above the working pressure, and to more than the boiler could bear. _No. 61. Bilston. (Fig. 28.) October 1st. none injured._ One Tube Cornish, 22ft. long, 6ft. diameter, tube 4ft. 6in. diameter, 3/8 inch plates, 12 lbs. There was an unusually large dome at the back end, 5ft. diameter, and the whole of the shell was cut out from under it, so that the construction was peculiarly weak. [Illustration: _Fig. 28._] The boiler had been off for cleaning, and steam was being got up in the night, and it was said that an extra pressure was caused by the stop valve being left closed, but it could not have been very great, or the large tube would have collapsed. The dome was split in two, in the line marked in the sketch, owing to the extreme weakness of the shell at the juncture of the dome, and the shell was a little ruptured on each side of it, and so large a rent was suddenly made, that the contents of the boiler passed harmlessly into the air, without moving the boiler on its seat. _No. 62. Preston. (Fig. 29.) November 11th. 1 killed, 1 injured._ [Illustration: FRONT VIEW. BACK VIEW. _Fig. 29._] One Tube Cornish, 16ft. 3in. long, and 5ft. 8in. diameter, tube 3ft. 1in. diameter, 7/16 inch plates, 60 lbs. The tube collapsed from end to end, from over-pressure, as the man in charge had fastened 3 bricks to the lever of the safety valve causing 27 lbs. extra pressure, under the impression that he could thus accumulate a quantity of steam during the night, to be available on commencing work on the morrow. _No. 63. Tamworth. (Fig. 30.) November 20th. none injured._ [Illustration: _Fig. 30._] Revolving Steam Chamber, 12ft. 6in. long, and 5ft. diameter, 12 lbs. The manhole was large, to facilitate filling and emptying, and was rectangular and unstrengthened on the edges, and measured 3ft. 6in. in length, and 1ft. 6in. in width, and the lid fitted on the inside and was held by clamps. The boiler was much out of repair, and a crack shown in sketch, from one corner of the manhole to the commencement of the hemispherical end was only temporarily prevented from leaking by a screw-patch, which did not restore the strength.