ARTICLE IV. 
NOTES ON A GRINDSTONE QUARRY AT STONE- 
HAVEN, GLOUCESTER CO.., N. B. 
By Geoffrey Stead, B. A. C. E. 
Read April 4, 1905. 
At Stonehaven, about 18 miles east of Bathurst on the south 
coast of the Bay Chaleur, is a fine quarry where grindstones, 
scythe stones etc., are manufactured in large quantities. The 
larger grindstones at least are exported to the States where a 
single firm uses about 400 per year from this quarry, I believe in 
the making of large knives, machettas, etc. 
The quarry lies below the level of high water and a dam is 
therefore built around the workings to exclude the sea. All 
gravel and waste material is then removed from the surface and 
a bed of good quality stone is left exposed. A channel two or 
three inches wide is cut through the centre of the top layer of 
stone and by means then of parallel and perpendicular channels, 
blocks of the required size are detached. 
The first channel must be cut completely through the bed, the 
parallel and perpendicular channels may be only two or three 
inches deep when by means of wedges the blocks of stone are 
split out. 
Making the first deep channel is a tedious process as it is done 
by hand with picks, and on seeing this, I remarked that a chi' el 
or channeller driven by steam would perform the work much 
more quickly and cheaply. The quarrymen, however, explained 
that the steam channeller could not be used as it would bind in 
the cut, for as the channel is made the sides of the rock creep to- 
gether, the total amount of this movement being about an inch 
and a half. At times when the channels are being made, the un- 
equal strain coming on parts of the bed not yet cut through, 
causes large spawls or chips to crack out, thus spoiling many 
blocks of stone suitable for grindstones. 
407 
