How many people were cashing these checks? That seems like a lot of checks to cash in a short amount of time by a limited number of people, and without raising suspicions.
IIRC, Sills told me they had 83 different names but didn't know yet if there were actually 83 different individuals.
In addition to just the regular crowd (and remember, Horton has different divisions so there could have been some of those folks already off work and at the bank), you had 83 Hispanics moving from one teller to the next cashing checks.
I'm sure you've seen how crazy it gets on Horton paydays. It was hard for the tellers to keep track of who was doing what. Clearly some of them cashed more than one check, but not at the same teller.
Also, Sills said to me (though I'm sure he didn't tell the newspaper!) that it was a case of "all Mexicans look alike" and the tellers didn't realize they were seeing the same faces coming through the bank over and over again. LOL!