January 23 1914.

THE COLLIERY GUARDIAN.

173

Air

Means

Money.

Therefore

It will Pay

Meco Hammer Drill fitted with Waterspray, which
effectively allays every particle of dust.

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You to Instal

« Hammer Drills.

At a recent test with three makes of hammer drills, the following figures were taken.

Hammer Drill.	Air Pressure.	Depth of hole Drilled.	Inches drilled per minute.	Cubic feet of air consumed per minute.	Cubic feet of air consumed per lin. drilled	Approximate H.P. Hours.
Meco	731b. per sq. in.	4 ft. 6 in.	4’9	22	4’5	4
X	do.	4 ft. 3 in.	4-1	32	7-8	6
Y	do.	4 ft. 0 in.	3-8	45	120	9

X 6-H.P. at Id. per H.P. hour = 6d. per hour.

Y	9-H.P. at Id.	„	„	9d.

Meco,	4-H.P. at Id.	,,	„	4d.	,,

THIS MEANS:

1.	Saving in capital cost on compressor when installing MECO Hammer Drills.

2.	Saving of from 2d. to 5d. per hour per machine in air consumed.

Write today for illustrated catalogue and particulars of free trial offer.

Ttie Mining Engineering Co. Ltd.,

Meco Works, Moorfields, SHEFFIELD.

Telegrams—“Meco, Sheffield.”

Telephone—4530 Central (2 lines).