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7. What is the special advantage of friction clutches on haulage plant? 8. Describe what, in your opinion, is the most efficient and convenient method of signalling— (a.) On haulage-roads. (b.) In shafts.

Fourth Day.—Time: 9 a.m. to 12 noon. Subject VII.— On Geology, Surveying, and Making Plans. 1. How is geology useful in coal-mining? 2. Describe the general structure of a coal-field? 3. What changes in quality and regularity of position are found in working coal-seams? 4. Describe conditions under which coal is found in any New Zealand colliery with which you have been connected, and show by sketches what is meant by — (a.) Dykes; (b.) Faults, downthrows or upthrows ; (c.) Overlap faults. 5. Candidate must produce plan showing survey of a portion of a mine surveyed by himself, and showing the connection between surface and underground work, the boundaries of surface to be not less than 20 acres, traverse to be calculated and field-book shown. 6. Assume line AB, N. 50° E., 500 links ; BC, N. 25° E., 300 „ CD, N. 20° W., 600 „ DE, S. 30° W., 500 „ required, bearing and distance of line to connect Eto A; line to be calculated. 7. Explain use of a vernier scale. 8. Describe difference between loose- and fast-needle surveying; and what are the special advantages of the latter ?

Fourth Day.—Time : 2 p.m. to 5 p.m. Subject VIII.— -Arithmetic, and a Knowledge of " The Coal-mines Act, 1891." 1. A mine worked on the pillar-and-stall system : the pillars are 25 yards long and 15 yards wide, bords 6 yards wide, and headings 4 yards: what percentage of coal is gotten in the first working ? 2. In a seam having an average thickness of 6 ft. and area of 1,000 acres, the specific gravity of the coal being 1 26, how many tons of coal should be got out of the seam, allowing what you consider a reasonable percentage of loss in working ? 3. Suppose you have two mines dipping 1 in 3, and 60 yards distance between them in the shaft, what length would a tunnel be, rising 1 in 5, to connect the two seams ? 4. Give the requirements of the Coal-mines Act regarding winding-drums and steam-boiler fittings. 5. What plans are required to be kept at a colliery ? Describe provisions. 6. How would you proceed to examine a working-place for gas so as to comply with " The Coal-mines Act, 1891"? 7. Name the various positions to which officers may be appointed under the rules applicable to coal-mines, and in compliance with the Act. 8. Give provisions of Act relating to (a) signalling, (b) ventilation, (c) explosives and blasting, (d) refuge-places, (c) machinery.

Questions used in Examination of Mining Managers for Second-class Certificates. (" The Coal-mines Aot, 1891.") First Day.—Time : 9 a.m. to 12 noon. [Candidates must attempt to answer every question. All calculations to be shown in detail.] Subject I.— On Prospecting, Shaft-sinking, Tunnelling, and Opening out a Colliery. 1. Describe how you would proceed in starting to sink a shaft through, say, 150 ft. of rather loose water-bearing strata. Show— (a.) How you would secure the ground until harder strata entered upon; (b.) How you would deal with the water —150 gallons a minute —temporarily ; (c.) Assuming no water in harder rocks, what steps you would take to exclude the surfacewater from the shaft. 2. In sinking a circular shaft requiring to be walled with brickwork, how would you proceed ? Describe — (a.) Scaffolding, how worked. (b.) Bricking curb, and how to fix same. (c.) Method of joining one length of bricking to the next length above.