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(1) 20-ton wagons represent about 50% increase in first cost while conveying double the load.

(2) Siding capacity at Collieries increased by 35%.

(3) Where the Colliery employs its own engine - reduced shunting costs.

(4) 5% rebate off conveyance charges and also 1¼d. a ton off charges for tipping and weighing.

(5) Increased clearance of Colliery yard per train.

(6) More rapid shipment and consequent quicker turn-round of vessels.

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(1) Reduction in number of wagons.

(2) Reduced train engine power.

(3) Decrease in deadweight hauled.

(4) Reduced siding accommodation necessary, or what is perhaps a better angle to view this, a 35% increase in the capacity of the existing sidings.

(5) Reduced shunting costs.

(6) Increased rate of shipment.