-Chicago-based T&T Technology said its gravitational fines separator, the Fines-Sep Bulk series, operates without water, moving parts or vibration.

The machine gently air-washes and separates the particles.

An option called Static-Sep eliminates the electrostatic bondage holding the particulates together.

Capacity for the series ranges from 5,000-40,000 pounds an hour.

Tel. (312) 266-7141, fax (312) 943-1634.