He
also described some of the steps by which he had arrived at the present
arrangements of the whole plant, and gave some particulars of its
working. Mr. Crampton asked some questions, in reply to which Mr. Ball
said the longest distance they had carried the material was 1,200 yards
in two relays--namely, a second pump on a floating barge with special
engine. The distance to which they could carry the material depended
upon its character. Fine sand would travel well; mud would not, bowlders
would not, though gravel would. To give the water a rotary motion he had
inserted a helical piece of angle iron, and so prevented deposition.
* * * * *
DANGER FROM LIGHTNING IN BLASTING.
Although the accident in the tunnel in process of construction at Union
Hill by the New York, Ontario, and Western Railroad Company, which took
place on Tuesday afternoon, was happily attended with no loss of life or
serious injuries to the men employed in the shaft, it reads a new lesson
as to the firing of charges of powder by electricity, and one that
should be carefully noted by railway and civil engineers, and even
by the torpedo service of the United States.
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