Zhkent, thanks for posting. What you call "slot" dozing is what I meant by "trench" dozing. Thanks for the clarification.
Here are some sites that contain lots of information on dozers(main focus on older machines)and dozing techniques.
http://www.acmoc.org antique caterpillar machinery owners club
http://www.antiquecaterpillar.org antique caterpillar machinery enthusiasts
http://www.IBDozing.com All links worked for me so if anyone has any problems, just do a search. Enjoy.
Russ
