SIOUX FALLS, SOUTH DAKOTA - AUGUST 20, 2004: Envelopes placed on conveyor and loaded into sorting system.

Name: Sioux Falls South Dakota August 20
Uploaded: 2013-06-18T00:00:00.000Z
Duration: 14 s
Channel: WGBH Educ. Foundation
Description: SIOUX FALLS, SOUTH DAKOTA - AUGUST 20, 2004: Envelopes placed on conveyor and loaded into sorting system. Stock Footage Video (100% Royalty-free) 4095202 | Shutterstock