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5. What is (1) the New Zealand coal-formation, (2) its upper stratum, (3) the general character of the lowest beds, (4) are the latter fresh-water or marine ? 6. (1) What do you consider the rocks indicative of coal in your district; and (2) explain an instance of unconformity in it ?

Fiest-class Ceetipicates.—Foueth Day.—Time : 9 a.m. to 12 noon. XIV. — A Knowledge of Underground Surveying and of making Plans, showing System of Working, Inclination of Seam, Faults, and System of Ventilation. 1. The candidate must produce a colliery-plan, showing the surface taken up for at least 20 acres in the vicinity of the shaft, and must show the underground workings in different coloured ink, and his method of connecting them with the surface when there is only one shaft. The plan must be the work of the candidate himself, and he must produce the original survey-book. The main roads at least must have traverse calculated, with latitude and departure for each bearing, also the manner in which the other workings have been surveyed and filled in. 2. How would you take up your megnetic meridian ? In what circumstances is surveying with the magnetic needle permissible ? 3. In making an underground survey with a compass, without appliances for angular measurements, and you were compelled to plant at once within the sphere of attraction of pipes or rails, what would you do ? 4. Describe the adjustments of the theodolite, dial, and magnetic compass. 5. What advantages has the dial over the theodolite for ordinary colliery work ? 6. You have a heading resting on a fault; from it the road dips at 1 in 1 as follows : bearing 360°, distance 200 links; bearing 357°, distance 160 links ; bearing 340°, distance 210 links. Thence you have a stone drift running level to cut the fault bearing 182°, distance 800 links. What is the vertical and horizontal distances between starting-point and finish? [The answer to be calculated from the log-tables.] 7. Describe fully how you plotted your survey in the plan you have produced? 8. Sketch a figure with at least six sides, and show how you would calculate its area? 9. What is the area of a right angle triangle of which the base is 200 links and the hypothenuse 640 links ?

Time : 2 p.m. to 5 p.m. XV.—A Knowledge of Arithmetic and the Method of keeping Accounts. 1. Find the square root of 243, 765, 769. What is the cube root of 39, 479, 120? How much is the \ of i of i of I x 192? 2. In making coke there is a loss of volatile matters of 23 per cent., how much coal is required to make 30 tons of coke ? 3. You have an output of 600 tons daily, each box weighs 4cwt., and contains 7cwt. of coal, what is the total amount wound exclusive of other weights ? 4. A heap of coal measures 10 yards by 30 at the base, and the sides slope at 45°, and the vertical height is 10ft., what is the cubic amount, and the approximate tonnage? 5. The royalty on 70,000 tons was at the rate of 7-J-d. on every 22Jcwt., what was the sum paid ? 6. The radius of a circle is 6ft., what is the circumference? 7. The logs for sole-plates measure 20ft. 6in. by lOin. by lft. 2in., what is their bulk?

XVI.—A Knowledge of the Provisions of " The Coal-mines Act, 1886," and Amendment Act, 1890. Oral examination by Supervisor.

Second-class Ceetificates. —First Day.—Time : 9 a.m. to 12 noon. I.—On tlie Sinking of Shafts and Construction of Main Boadways, opening out a Mine, and the Division of a Mine into Districts. 1. Describe tools and appliances used for sinking a shaft through both soft and hard ground— (1) through mud or quicksand, (2) through compact clay. Show by sketch the method you would adopt. 2. Give a rough sketch of the top of shaft, with surface appliances for protection of men at the bottom. 3. If you were sinking a shaft through quicksand with metal tubbing and came across large logs in the quicksand which were covered with sand and water, how would you remove these logs, and what precautions would you adopt to keep the tubbing perpendicular; and also what means would you adopt to guard against gas accumulating behind tubbing ? 4. What class of pumps would you use in sinking a shaft when there is water, and how would you secure them ? 5. Show by sketch the manner in which you would lay out working of a small colliery where twenty men were employed.

ll. — The various MctJiods adopted in securing Shafts and Workings in a Mine, showing the relative Advantage and Efficiency of each Class of Material used. 1. In making provision to secure a shaft Bft. diameter in the clear, what material would you use ? and describe fully how you would secure the shaft as it is being constructed. 2. In securing a shaft 12ft. by sft. in the clear with timber, show by sketch the method you would adopt (1) with frames and planks, (2) with planking only, and show how you would divide it so that there was room for two cages to work and one column of pumps.