| http://www.w3.org/ns/prov#value | - duty, until he has had at least ten consecutive hours off duty; and no such employee who has been on duty sixteen hours in the aggregate in any twenty-four-hour period shall be required or permitted to continue or again go on duty without having had at least eight consecutive hours off duty: Provided, that no operator, train despatcher, or other employee who, by the use of the telegraph or teleph
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