An expedient formerly used to ignite bickford style safety fuses was to split the end of a safety fuse, place a match head into the split and tie the split back together, holding the match head against the powder core.
32.
In addition, agents found non-electric blasting caps, pyrodex-- or black powder-- and safety fuse inside the farmhouse, and " jagged-edged metal fragments, which appear to be shrapnel from the detonation of explosive devices " in a field, according to the affidavit.
33.
The Associated Press also reported that a senior federal official said investigators believe the bomb was composed of 20 to 25 plastic 55-gallon drums of " ANFO, " ammonium nitrate and fuel oil, using detonating cord as a booster and a safety fuse.
34.
"On the south side of the main street, at the bottom of Tuckingmill, set in a wall, was ( certainly prior to 1990 ) an inscribed stone which amongst other things credited his daughter with the inspiration / possible invention of the safety fuse ."
35.
Forensic evidence shows the 2, 170-kilo ( 4, 800-pound ) bomb was composed of ammonium nitrate and fuel oil, a detonating cord as a booster and a safety fuse designed to burn at a known rate of speed so a bomber can get away, officials said.
