slow-burning explosives.

“Washington, D.C., _January 9, 1909_.

“In response to the above communication applications were received
from 12 manufacturers for the testing of 29 explosives. Of these
explosives, the 17 given in the following list have passed all the
test requirements set forth, and will be termed permissible
explosives.

“_Permissible explosives tested prior to May 15, 1909._

----------------------------+----------------------------------------
Brand. | Manufacturer.
----------------------------+----------------------------------------
Ætna coal powder A | Ætna Powder Co., Chicago, Ill.
Ætna coal powder B | Do.
Carbonite No. 1 | E. I. Dupont de Nemours Powder Co.,
| Wilmington, Del.
Carbonite No. 2 | E. I. Du Pont de Nemours Powder Co.,
| Wilmington, Del.
Carbonite No. 3 | Do.
Carbonite No. 1 L. F. | Do.
Carbonite No. 2 L. F. | Do.
Coal special No. 1 | Keystone Powder Co., Emporium, Pa.
Coal special No. 2 | Do.
Coalite No. 1 | Potts Powder Co., New York City.
Coalite No. 2 D | Do.
Collier dynamite No. 2 | Sinnamahoning Powder Co., Emporium, Pa.
Collier dynamite No. 4 | Do.