REC002-4007

A measure of safety may be found in the use of high explosives combined with wet tamping, or, still better, water cartridges, instead of powder under any of its modifications. Encouragement ought also to be given to the use of patent multiple wedges and applicances of a like nature, for supplanting the use of explosives. Under all circumstances and conditions some provision should be adopted for compelling workmen to thoroughly undercut, shear, or nick, and generally to work the coal as directed by the Manager.