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Subject E.— On Blasting and the Use of Explosives. 1. Show by sketch how you would bore holes for blasting in hard, compact rock in the face of a main level the dimensions of which are 5 ft. 6 in. wide and 6 ft. high. Describe fully how you would fire the different holes to give the best results. 2. If you were blasting in the bottom of a shaft where a pump was employed, what arrangements would you make before firing shots? 3. Give the comparative strengths of dynamite, blasting-gelatine, and blasting-powder ; also state the weights and comparative strength of these if a borehole 1J in. in diameter were charged to a depth of 10in. with each explosive, 4. Describe how you would prepare a charge and fill the borehole if you were using blastingpowder and had to fire the charge in very wet ground. Subject F.— A Knowledge of Arithmetic and the Method of keeping Mining Accounts. 1. The distance driven on two levels on a lode is 240 ft., the height of backs between the levels is 1,000 ft. perpendicular, but the lode has an underlie of 23 degrees from vertical, and has an average width of 2 ft. 10 in. at one end and 5 ft. 8 in. at the other end. How many tons of ore is there between the two levels, taking 15 cubic feet to a ton ? 2. From 2,000 tons of quartz 1,104 oz. 11 dwt. of bullion was produced of 05334 fine in gold. Find the value of the gold, taking pure gold to be worth £4 4s. per ounce. Also give the value per ton of quartz. 3. The wages for twelve days in a mine was £900 where a hundred men were employed in trucking and repairing roads and forty men on surface. The hundred miners got four and a half times as much as the forty men on surface, and the forty truckers got seven-eighths of the wages the forty men on surface got. How much did each man receive? 4. If twelve men and seven boys did a certain piece of work in forty hours, how long would five men and four boys be in doing the same work, allowing that four boys did work equal to three men ? 5. If you purchased twelve picks at 3s. 4Jd. each, twenty-four shovels at 4s. 7fd. each, and 1151b. pOwder at 7£d., state the total amount of purchase. Subject G. — A Knowledge of Part V. of " The Mining Act, 1898." 1. To what extent is it lawful to carry on mining operations without having a certificated manager in charge ? 2. What are the general provisions respecting ventilation ? 3. Name the requirements of the Act regarding plans. 4. What are the conditions under which explosives may be stored and used in a mine? 5. State clearly the provisions of the Act in respect to signalling in shafts, underground planes, and alluvial workings. 6. What report-books have to be kept at a mine, and who is to sign them ? Subject H. — Pumping Appliances and the Drainage of Mines. 1. To what extent may a siphon be used in mine-drainage, and what conditions affect its efficiency ? 2. What is the reason for the slow rate of speed at which bucket and plunger pumps ordinarily travel ? How is it possible to work pumps with safety at a high rate of speed ? 3. Describe the centrifugal pump, and show how far it is applicable to mine-drainage. 4. Assume an engine working two pumps each having a stroke of 6 feet. One is alO in. plunger pumping from a depth of 300 feet. To equalise the load on the engine, what is the required diameter of tbe other pump working from a depth of 200 feet only? 5. What H.P. is necessary to raise 12,000 gallons of water per hour to a height of 300 feet ? Subject I. —■ The Haulage in Shafts and on Underground Planes; also the Strength of Haulage Bopes and Chains. 1. Describe the leading features of a modern winding-plant for a deep shaft where a large output has to be raised. 2. It is required to wind 25 tons of ore per hour from a depth of 400 feet. Boiler-pressure, 801b. per square inch; drum on second-motion shaft. Give diameter of cylinders, length of stroke, ratio of gearing, and diameter of drum. 3. Under what conditions are the so-called "safety-catches" (designed to arrest the cage in the event of a rope breaking) a source of danger in winding? 4. What effect has shock and vibration (incidental to winding operations) upon the couplingchains, pins, shackles, &c, by which the ropes and cages are connected? How would you guard against accidents which are liable to occur as the result of shock and vibration ? 5. Describe the best method of lowering 50 tons of ore per hour down an incline tramway half a mile long having a grade of lin 5. State breaking-strain, weight, and circumference of rope suitable for the work. Subject J.— The Effect that Faults, Slides, and Mullock-bars have on Lodes, and how to ascertain the Direction of Slides and Heavals. 1. Describe five dislocations of lodes from your own experience, with diagrams and full particulars of how they were overcome.