Given the numerous questions on what is basically the same general topic, I decided to explore for an answer in advance of the Christmas party, and the replies that I got were as follows: From the key punch ladies, "We keyed in what we had from the option sheets, what the machine spit out in the form of a completed punch card- well that could be a different story, and we did not have time to look or audit, that was done elsewhere"
From the Data processing guy: All these issues sound like defective switches in the key punch tabulation machine or more likely a punch card reader error .
This is a model 29 card punch station as used at Norwood from 1965-1972:
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