Office hours are the following:
Monday through Thursday 9:00AM to 4:30PM Central Time.
Friday 9:00AM to 3:00PM Central Time.

Contact Numbers
618-476-3200 (phone)
618-476-3221 (fax)

For sending email questions, use one of the following email addresses:
postcourse@hfrg.org for any course-related work
orders@hfrg.org for placing any purchase-related orders
correspondence@hfrg.org for anything not related to an order

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Human Factor Research Group, Inc.
609 S. Breese Ste. 101
Millstadt, IL 62260