We blasted this hydraulic power unit for a local company in Cincinnati, Ohio. It had not been cleaned for a couple decades and they needed to make some repairs to it.  A company came out to work on it and they told them it needed to be cleaned off.  In the first few photos you will see a test spot we did for the customer.  They couldn't believe how fast it worked and how clean it got the unit.  Some of the areas were 3/4" thick. After we where finished it looked brand new!