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Date Posted: 22:37:03 10/21/08 Tue
Author: jim straight
Subject: Question... "shelf life" of a dynamite blasting cap?

Over the many years while out detecting for eluvial gold around old dryplacer areas I have accentally found old unused detonating caps. According to what I know some
placer miners to avoid hand picking tough ground just gadded
a hole into the ground a couple of feet and used a stick of
dynamite.

As I remember(?) a cap contains fulmanite of mercury. In the
past I have found some that looked just like new and carefully disposed of them so they would not be again found.

Back when I was a kid I knew of a "townie" who found a box of them and not knowing hit one with a toy bowling pin. The
result was he lost one eye.

I guess my question refers to a cap that has been lost and
buried in the dirt in a dry desert area such as around Randsburg CA or in one of the Nevada placer mining areas.

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