January 24, 1913. THE COLLIERY GUARDIAN 181 3.. In which localities in the workings of a mine would you expect to find firedamp and carbonic acid gas respec- tively ? How would you make tests to ascertain the presence of each ? State the height of the firedamp“ cap” which corresponds to 2, 3 and 4 per cent, of firedamp respectively. (50) 4. Describe minutely how you would arrange to ventilate a single heading driven in solid ground so as to restrict as little as possible, or not at all, the quantity of air passing through the district ? (50) 5. If you have 20,000 cubic feet of air per minute passing through a mine with a water-gauge of 1 in., what must be the height of the water-gauge in order that 40,000 cubic feet per minute may pass through it ? And what is the theoretical horse-power required in each case ? (50) 6. Given a persistent blower of firedamp in a cavity in the roof of an intake airway near which there is a return airway not necessarily in the same seam, what means would you adopt to prevent the firedamp from reaching the working faces ? (50) Subject No. 3.—Explosions in Mines, Underground Fires, and Inundations. 1. What are the principal sources of coaldust under- ground, and what character of dust do yc u consider to be most dangerous ? What means would you adopt to prevent or reduce the production of dangerous dust in a mine ? (20) 2. What are the most common causes of explosions ? In order to guard against the risk of explosions, what matters would require your special attention in the course of your daily supervision ? (20) 3. What alteration would you expect to find in the composition of the air in the workings of a mine after an explosion, and what is the nature of the most dangerous gas produced by an explosion ? What tests would you make of the air in such workings before permitting men to enter ? (20) 4. In working a seam of coal known to be liable to spontaneous combustion, what ordinary precautions should be taken in the course of their daily work—(1) by the officials of the district, and (2) by the workmen ? (20) 5. Describe, with simple sketch, any type of rescue apparatus with which you are familar, and explain upon what principles its safety depends, and what defects or misuse would render it unsafe. (20) Subject No. 4.—Machinery. 1. Give a list of the fittings and mountings that it is usual to have on a Lancashire boiler, including everything that is attached to the boiler shell, and state briefly the purpose of each item. What is a deadweight safety valve ? (20) 2. What are the dangers arising out of the use of electrical power underground in connection with cables and motors, and how are they to be avoided ? (20) 3. On your rounds underground you discover a crack, about 4 in. long, in a pipe through which compressed air is escaping freely. The pipe is 5$ in. in over-all diameter, and the crack runs along it. Make dimensioned sketches of a plate and clamps suitable for effecting a temporary repair. Draw up an order on the workshops for the materials wanted, including the bolts, describing all the items clearly. (20) 4. Describe any type of coal-cutting machine. State the depth of cut and the rate of cutting (either in feet or square feet per hour or per shift) and the horse-power required. (20) 5. In connection with any tram (hutch or tub) that you have used or seen in use, give as many of the following particulars as you can:—Internal length of body; internal breadth of body; internal depth of body; height above rail; diameter of wheel; diameter of axle; gauge of track; wheel base (i.e., distance from centre to centre of axles) ; type of bearing; method of lubrication; type of drawbar and coupling; gross weight of tram loaded with coal; net weight of tram; kind of materials used in body; kind of material of wheels. Subject No. 5.—Arithmetic and Surveying. 1. How many cubic yards of coal will be produced from 10 yards of a room, drift, or heading, 10 ft. in width, in a seam 5 ft. thick, and how much will it weigh if the weight of a cubic foot of coal be 80 lb ? (20) 2. If the cost of driving a cross-measure drift, or cross- cut mine, 9 ft. by 6 ft. be 95s. per fathom, what will the drift or mine cost if its length be 125 fathoms, and what is the cost per cubic yard of rock removed ? (20) 3. What weight of water is contained in a tank 15£ ft. x 10ft. x 6ft., and how many gallons does it contain? (20) (4 ) Describe how you would set out or lay off a bearing of a drift, or heading, N. 60degs. E., with a common dial. How would you fix your plumb lines, and what precautions would you take to avoid error in setting out, or in laying off, and in maintaining the direction ? What substances, natural and manufactured, may you expect to find in a coalmine that will deflect the needle of the dial ? (20) 5. Describe the process of levelling with a straight-edge and spirit level ? Under what circumstances would you adopt that method of levelling, and how would you test the straight-edge and spirit level so as to secure accurate work ? (20) Subject No. 6.—Mines Act, General and Special Regulations and Orders, and writing of Reports. 1. As certificated under-manager, write a report to the manager, of an accident to a winding engine which occurred soon after the pit started drawing coals, you being under- ground at the time, on the assumption that the engine was used for raising men and coals, that the repairs took about six hours. State what steps you took on hearing of the breakdown. (30) 2. What are the provisions of sections 64 and 65 of the Mines Act relating to inspections before commencing work and during shifts ? How are these carried out in practice at any colliery with which you may be acquainted ? (25) 3. Quote, in your own words, five out of the seventeen regulations in the Third Schedule of the Mines Act relating to the employment of horses underground, and state your views upon the reasons for each of the five that you quote. (18) 4. What are the subjects of examination for firemen’s, examiners’ or deputies’ certificates, and what are the reasons for subjecting them to these tests ? (18) 5. Quote, in your own words, the Order in Council relating' to rescue apparatus, section 5 (b) on the provision of tracings of the workings. What is the object of the regulation ? (9) WORKMEN’S COMPENSATION. (Specially Contributed.) Riding on Train for His Own Convenience. Charlesworth v. Chatterley Whitfield Colliery Company. —In this case (Tunstall, October 11) it appeared that on June 8 the applicant boarded a coal train at Pittshill in order to ride to the colliery to get his wages. The train did not stop at Pittshill, but slowed down, and 50 or 60 men and boys were riding on it. The applicant succeeded in getting on to a truck, but, in moving his position, he fell off and was run over. Asa result, his left arm had to be amputated. For the defence, the manager of the company said the workmen had no leave to ride on empty wagons, but were allowed to travel on the company’s lines on sufferance only. The company had never forbidden the men to climb on to the wagons» and if they got on the trucks when the train was stationary he offered no objection, but the train only slowed down at Pittshill because of the gradient. Evidence was given that some of the men had been cautioned. On behalf of the company, it was contended that the accident did not arise out of the applicant’s employment, and this view was upheld by the judge, who said the employees were only allowed to ride on the train for their own convenience, and that the company had never approved their getting on when the train was in motion. It was impossible to find that it was any part of the boy’s duty to get on while the train was in motion at that place, and though sorry for him, he must find for the respondents without costs. Injury to a Dataller. Pepper v. Sneyd Collieries Limited.—In this case (Burslem, September 12) it was shown that an injury which incapacitated a man, apparently even to a small extent, may be such as to entitle him to compensation. The accident, in respect of which the claim was made, occurred on February 24. The applicant was a dataller, and while carrying out his duties there was a fall of dirt.. It was only a small fall, but the debris struck his knee and injured it. For the respondents, Dr. Shufflebotham said he examined the applicant on August 23. He found that the knee had completely recovered and that the move, ments were in no way restricted. He was in a weak condition, however, suffering from bronchitis and shortness of breath, and there was also some degree of arterial sclerosis. Witness was of opinion that the loss of weight was due largely to the complete change of habits since the accident, and in a lesser degree to the arterial sclerosis and bronchitis. Delivering judgment, his Honour said the conclusion he had come to was that the applicant was not at the present time able to do his ordinary work. His condition was due, in his judgment, to the results of the accident and therefore the compensation must continue until further orders. Compensation and the Minimum Wage. Dean v. Tonge Colliery. — In this case (Bolton, October 2) the Minimum Wage Act was considered for the first time by Judge Bradbury. Dean, a drawer, of Bolton, asked for compensation for an accident at the Tonge Colliery, owned by Messrs. T. and H. T. Scow- croft, to be fixed on the standard of the minimum wage for colliers instead of on the average rate earned. Evidence was given that the minimum in the case of a drawer, like the plaintiff, was fixed at 5s. 6d. a day, and for the collier at 6s. 6d. After much legal argument, his Honour said he was surprised that the plaintiff should have based his claim on the minimum. He claimed 32s. and had only proved 30s., whereas the respondents claimed the right to pay 26s., and admitted paying at the rate of 32s. The respondents said the colliery worked 269 days last year, and his Honour eventually based his judgment on this rate, saying that the average must be 5£ days a week, and at the minimum rate of 5s. 6d. a day this would come to 28s. 7d. a week. He felt that the man’s average would be 30s. a week ; he arrived at this average from a consideration of a period of the man’s actual employ- ment, and would base the compensation amount on this figure, which gave 15s. a week compensation. It was a mistake for colliers to base their average earnings on the minimum because the average rates must be over the minimum. *#* We shall be pleased to answer in this column questions relating to Workmen’s Compensation and Employers’ Liability. All communications must be authenticated by the name and address of the sender, whether for publication or not. No notice can be taken of anonymous cowvmunications. NEW RAILWAY DEMURRAGE REGULATIONS. As a result of the views laid before the goods managers of the railway companies by the Association of Chambers of Commerce of the United Kingdom at a conference on January 7, new regulations in regard to the addressing of goods have been adopted by the railway companies and will come into force on March 1 next. Articles or packages will then be accepted if fully addressed or bear a distinguishing mark, together with the name of the destination station. Bars, plates, rods and sheets of iron, iron forgings, chains, &c., must have the address or the trader’s mark and destina- tion station painted or stencilled thereon or on suitable tallies. Export and import traffic and goods carried in full tiuck consignments to a single consignee will, for the present, be exempt from these regulations. As regards traffic to or from Ireland, the Irish railway companies require every article or package to be fully addressed. The deputation also submitted various reasons for the revision of demurrage charges which came into operation on January 1, but the railway companies would not agree to this. The new regulations propose to enforce the payment of demurrage on trucks detained more than two days for loading. The revised charges (which came into operation on January 1) are:— Before conveyance, Is. 6d. per ordinary wagon per day, and 3d. per sheet per day, after the expiration of one day, exclusive of the day upon which the loading of the wagon is begun. After conveyance, the same charges after the expiration of two days, exclusive of the day of arrival—e.g., wagons arriving on Monday, and not released before closing time on Wednesday, would become subject to the charge. Wagons of special construction or large capacity (such as are extensively used in the Sheffield district) are subject to special arrangements, and the regulation does not apply to coal and coke traffic. The deputation, above referred to, asked that, failing an agreement to postpone the regulations, traders should be given the benefit of the South Staffordshire and South Wales agreements by which traders in those districts are allowed three days’ grace before conveyance on railway sidings and three days after conveyance, while traders having private sidings are allowed four days before and four days after. Four other suggestions were submitted:— 1. Would they agree to the trader providing his own wagons at an agreed rate for wagon hire ? 2. Would they undertake to provide the trader with an ample supply of wagons? 3. If the trader is to pay demurrage for wagons occupied beyond the specified time, it is only reasonable that the railway companies should agree to allow for delay either in supply of empties or in transit of goods beyond a reasonable time. What did the railway com- panies suggest was a reasonable time? In the fourth place, reference was made to the custom of railway companies, who send advice notes from the receiving station to traders of the arrival of goods, when the latter are in wagons in storage or marshalled in sidings. To these sidings there was no access, and they might be anything from half-a-mile to three miles away from the goods depot, where the wagons were available to the trader for the purpose of being unloaded. The wagons were placed in the storage sidings until the railway companies were able to put them in position for unloading at the proper goods depots, and it frequently happened that the time of demurrage commenced when the goods arrived at these sidings, and not when they arrived in position avail- able for unloading. Mr. T. W. Ward, who placed these propositions before the companies, asked that this state of things should be remedied. The delegates generally left the meeting very dissatisfied with the results of their efforts, as the railway officials showed no disposition to yield to the arguments put forward by the traders. At arresting of representatives of the Chamber of Com- merce of Newcastle, Sundeiland, Sti ckton, West Hartlepool, and Middlesbrough, held in Newcastle, on Saturday, it was resolved to ask the secretary of the Railway Clearing House to arrange to meet representatives of local chambers of commerce at an early date with regard to particular points on the demurrage question.