A thousand feet, Peter? You really want to make sure that you're not hoist by your own petard. But, to detonate electric blasting caps the lead wire is typically an insulated 20 gauge single strand copper wire. There are a few dynamitophiles who prefer to use silver wire. Although measuring instruments have indicated that there's no difference in the intensity of the blast, they insist that it sounded louder and of higher quality to them, and that years of listening to dynamite has allowed their ears to develop an exquisite sensitivity.
