Mended a cut with two orange twist nuts, white grease, and electrical tape along the twisted wires going along the front of Kathy’s garden about 1 foot from house-side corner. Reburied twisted wire along border. It looks like a mower blade had nicked the twist there and it had rusted over time and finally started to give way.
See also: http://fiveforks.com/jeb/2012/09/radio-fence-repair-backside/