Note 14 — MY NORTHERN EXPOSURE
Reading edition
The explosive used is a development of Whinney's along suggestions made by me. I am not at liberty to give the chemical formula, but its lines of force are bi-lateral instead of perpendicular as is the case with lyddite and the other nitroglycerine derivatives. To any one especially interested in ice blasting I shall be pleased to furnish additional information. W.E.T.