Supporting Amateur Radio Emergency Communications

Question:

During the construction of Hoover Dam many workers were killed by falling rocks or debris.To protect themselves they made an early version of hard hats. What did they call them back them?
Answer:

Some high scalers took cloth hats and dipped them in tar, and allowed them to harden. When workers wearing such head gear were struck hard enough to inflict injuries such as  broken jaws, they did not sustain any skull damage. Six Companies ordered thousands of what initially were called “hard boiled hats” (later called “hard hats”) and the use of them was strongly encouraged.

Source https://en.wikipedia.org/wiki/Hoover_Dam

Correct answers:
KI6AIX     Dennis
K6CZH     Robert
K6LMN     Roger
KK6OTP     Glenn
KF6QQM     Kelly
KB6YVA     Bob
NN6SG     Steve
KM6ECH     Angelo

Thanks to all that checked into the net. Special thanks to Gary (W6NVY) for use of the repeater.

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