Southeastern Equipment Company (SECO) also converted surplus military tracked vehicles into tracked carrier for the mining and logging industry.
This included T16 Universal Carriers (
see photo source), High Speed Tractors (it may be where the one now in Austin Texas came from). They also bought a batch of Sexton SPGs from Portugal, but it seems most of those were not converted and eventually sold to collectors.
Read a bit more about SECO here:
http://www.mapleleafup.net/forums/sh...ad.php?t=13607