When Tannerite is shipped or purchased, the powders are separate and only mixed together just before use. Tannerite is used to create an exploding target in shooting practice, showing the shooter whether the target has been hit at long range. No traces of Tannerite were found at the site of the blast in New Jersey. The product, available since about 2000 in the U.S., is widely available in sporting goods shops throughout the U.S. and both online and in retail shops in Canada. The Tannerite manufacturer's site says Canadians must have an explosive importation permit from Natural Resources Canada before the company can ship to Canada.

Source: CBC News September 19, 2016 14:03 UTC