Luminosity-driven channeling extraction has been observed for the first time from a 900 GeV circulating proton beam at the Fermilab Tevatron. The extraction efficiency was found to be of he order of 30%. A 150 kHz beam was obtained during luminosity-driven extraction with a tolerable background rate at the collider experiments, and a 900 kHz beam was obtained when background limits were doubled. This is the highest energy at which channeling has been observed. /home/httpd/docserver/releases/20080613005430/public/paper/file/35/asseev_1998_0401.pdf asseev_1998_0401.pdf 24 35 luminosity-driven channeling extraction, circulating proton beam, Fermilab, Tevatron, extraction efficiency, collider, background limits 24 1998 401 1-9 1998