May 23, 1913. THE COLLIER? GUARDIAN. 1059 ____________________________________________________________________________________________________________________________________________________________________ the face fault for some time past, the first occurring in August 1906, at the face, right up against the fault in old 37’s stall. This fire was dug out. A second fire occurred not far away from the first, viz., at the top side off the crossgate out of 33’s level on the fault side, where some timber had been left (see fig. 2). A third fire occurred at old 121’s stall, still against the fault, and at a point which is marked A on the plan (fig. 2). The existence of this fire was first discovered on November- 20, 1911, and when scouring roads were driven to it it was found that the fire had backed from the fault for a 1 “ S 9 ew -i _S r r Sfcrf’/VM , $oatl seen a “ flash over- the pack ” about 20 to 30 yards away from where Springthorpe had seen the fire before. But on making an investigation, neither the under-manager nor the deputy could find any trace of the fire. Mr. Bridges, however, stated that although he could not find it, “ there must have been some fire ” in April. Eventually the road and gateway leading to it were stated to have been stowed up. The temperature at the spot where the fire had been seen by Saunders was according to Springthorpe between 94 degs. and 98 degs. Eahr. at the time when Saunders made his statement. This spot was just about four yards from the airway side. A good system of air sampling and analysis was in operation at the colliery, and the state of the mine air in various parts of the openings to the area affected by the fire or incipient fire for some time prior to the explosion is given in a table accompanying the report. From this it appears that the atmosphere at 121’s old gate had been depleted of nearly one-quarter of its oxygen, containing only 15’8 per cent., and showing also 2 per cent, of carbon dioxide, clearly indicating considerable heating in the vicinity. The first indication of the fire reported was on Friday evening, and during the whole of the week-end the management were engaged in combating this fire. The meaning of the expression “ gob stink in 121 old gate ” needs some explanation. During the operations attendant on the extinguishing of the previously-recorded fires in this district, old 125’s had been stowed up, having acted as a “ smoke-hole ” or vent for the air carrying smoke into the return airway to the 33 level. Old 121’s then ventilation was passing along the face of 64’s and coming out past the end of 7’s until the pack was put on and that the pack “ could be finished, I think, on Monday afternoon.” The face of 64’s was, however, being worked on Monday, and the south district workbook points to men being engaged in building a pack in 64’s on Monday night. There must have been an air road connecting the face of 64’s and 7’s. On fig. 2 is shown by dotted lines the position of the stopping in 7’s gate supposed by the management to have been erected, but shown at the enquiry not to have been put in. So far as can be determined, no notice of the indications of heating was sent by the manager to Mr. Pickering. “ It is quite clear to me,” says Mr. Redmayne,” “ that the place was dangerous, but it was necessary, in the interests of safety, that the stoppings should be put in with all possible despatch; care, however, should have been taken to see that the ‘ intake ’ to the fire area was stopped off before the ‘ return ’ side, and no persons other than those engaged in putting in the stoppings should have been allowed to work in the district until the area in question had been completely isolated.” As to the atmospheric conditions prevailing at the time of fire a short time precedent to the explosion, the automatic chart of the barometric pressure on July 8 shows a steady rise from 29'74in. to 29'90 in., and for July 9 a continued rise from 29'90 to 30 00 inches. Conclusions. The report proceeds to give a narrative of the occurrence of the two explosions, of the sealing off operations and the recovery work. Mr. Redmayne’s conclusions on the^vanous’points are'given’below :— 6 T M PAGE. / / 9 V s ■ 'iJL. I "i r -J g ... ,.. Fig. 5.—Iron Doors Inserted in Stopping during Process of Recovery. became the new smoke - hole. It was in this road, therefore, that the smell of “ gob stink ” would naturally be first detected. Mr. Redmayne here states that the plans submitted by the management at the enquiry, purporting to show what roads had been stowed and the position of the ' stoppings in the neighbourhood of the fire were inaccurate, though he satisfied himself the particulars ! shown were in accordance with the instructions given j by Mr. Chambers, but he does not think these instruc- tions had been carried out in the order and manner ' intended by Mr. Chambers. Mr. Redmayne is of opinion that the directions given by Mr. Chambers were proper ■ and such as would have prevented the disaster that ' took place on Tuesday morning had they been carried out in the order in which he intended them to be carried 1 out. Reproduction of the illustrated notes in Cusworth’s note-, m___• ______a- „ a.____.. ™ tvt__ book, descriptive of the position of bodies, tubs, lamps, &c., ^ ie position, accoi ding to Spungthoipe, on Monday after the first and before the second explosion. I afternoon when he left the pit, was as follows:—The stopping in old 125’s was completed. A pack stopping distance of eight yards into the goaf (gob). On j had been put in 121’s old gate, and outbye side of it a January 20, 1912, a small explosion of gas occurred brick stopping had been commenced but was not at this fire, slightly burning four men who were engaged completed, and a stopping had been built in old 7’s. in working at the face. The deputy, Springthorpe, said he saw fire on February 2, which “ broke out over the top of the bars that had been set to scour forward towards the fault ” This was about two yards back from the fault, ' and it was the top coal which caught fire which “ had probably been packed in when the coal had been got out.” It was only a very small fire, and Springthorpe soon put it out. The chargeman at this spot (Saunders,' killed in the explosion) stated on April 10 that he had According to him the only men working at stoppings in the district were those at 121’s old gate and those at new 7’s who were engaged in strengthening a pack stopping. No stopping had been put in on the left- hand side of new 7’s up against the fault. He said, “ it was quite solid on the fault side,” but the Chief Inspector is very doubtful as to this being so. He said also that the right-hand of 7’s stall was “ gob packed,” so that an explosion could find no vent along the face there. In answer to Mr. Smillie, he said some of the The First Explosion. From a consideration of the evidence of the witnesses who appeared before me, I have arrived at the conclusion that the first explosion originated above 64’s gate, most probably in the neighbourhood of the face of 7’s gate, and travelled in two directions. One was along the face to 121’s gate displaying very little force but great heat; it split at 121’s and passed partly down 121’s crossgate, developing force and partly along the face to 12’s gate. The explosion passing down 121’s bifurcated at the bottom of 12’s gate, part continuing to sweep along the crossgate and part entering 12’s gate (a man had been blown over a water tub inbye in 12’s gate). On reaching 14 level the explosive blast seems to have developed its greatest violence— possibly owing to accumulations of coaldust on the landing or perhaps to obtaining a sufficiency of air to render the mixture of gas and dust more explosive—and to have expended itself on the level further outbye, about where 19 crossgate joins 14 level. There was no evidence of burning by the first explosion for any distance beyond the end of 19’s crossgate ; but there was evidence of force up to the end of 14’s level, as the tubs at the outbye end of this level were blown on to the plane. The other direction pursued by the explosion—from near the point of origin—was down the 64’s gate (two bodies were blown into the side in 64’s crossgate), and force and flame continued along 19’s landing and to 19’s crossgate (some 50 yards below the level it upset two tubs, blowing one on top of the other, and pressing them tight against the roof. These tubs were put on to the rails again after the first explosion. It blew the separation door open, but did not damage it, and burnt two men there, viz., Mulrooney and Boycott) ; I do not think, however, that the flame reached the end of the 19’s Crossgate, but that the explosion died out along that road. I think it died out for want of fuel to