A small sidewalk clearing plow in Ottawa, Ontario, Canada A snowplow works by using a blade to push snow to the side to clear it from a surface. You may always withdraw or refuse your consent by clicking on the unsubscribe link in our email communications or by contacting us at 1-800-226-8473. Please note that even if you have opted out of receiving marketing communications, we may still contact you for the purposes of administering your account and sending you transactional or operational emails.