Eastern Entrance to the basin.
8. The supply of granite from the quarries is unlimited. The face of the latter will be only 700 feet distant from the work. The quality of the stone is excellent and blocks of large size are readily obtainable.
The Government plant available, without detriment to the Praya Sea-wall and other Public works, however, is limited to the necessary railway, an eight-ton derrick crane, as also picks, shovels, and quarrying tools. Another crane and 20 tip waggons will therefore be required, in addition to the necessary timber for the quarry.
It is proposed to do all the unskilled work by convict labour, should the Governor allow it.
9. It is proposed to place the larger sized stones on the external face of the breakwater, throwing the smaller ones into the centre. The outer slope facing the sea will be at an angle of one and a half to one, the inner one being ... to one. The stones forming the upper layers and the top surface of the breakwater will be of the largest possible sizes, not loosely thrown out but carefully selected in situ and well packed in. The sea-bottom is a hard and compact sand into which the stones cannot sink.
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