PLATE 24.

MINING.

Shaft with Cases.

Shaft with Frames.

Galleries, Hard soil.

Shaft, Hard Soil.

Use of False Frame.

Section on A.B.

COMMENCEMENT
OF THREE-WAY JOIN.

INSERTION OF FUZES
IN POWDER BAG.

Spark Measurer.

CASE.

For Wire Fuzes.

Quantity Dynamo-
Electric Machine.

Continuous Circuit.

Simple Circuit.

Push Pick, 3lbs. 6oz.

Miner’s Shovel, 6lbs. 4oz.

Miner’s Pick, 6 lbs.

Miner’s Truck, 50 lbs.

Candle-stick.
312 oz.
Fig. 5.

Bucket.

Flexible Tube.

Tin Tube.

COUPLING UP FUZES
IN PAIRS.

Bellows, 15 lbs.

No. 4 Tube.

No. 13 Detonator.

No. 5 Detonator.

No. 9 Detonator, Naval.

No. 1 Fuze.

No. 10 Naval.

Bickford’s Instantaneous Fuze.

No. 8 Bickford Detonator.