Here's my guess. The boring operation has progressed far enough that they can switch to the full length version. The full machine is 350 feet long, so maybe Mom Chung hasn't had a chance to stretch out fully.
That white phone booth is either an operator enclosure, or the port-o-let.
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Here's my guess. The boring operation has progressed far enough that they can switch to the full length version. The full machine is 350 feet long, so maybe Mom Chung hasn't had a chance to stretch out fully.
That white phone booth is either an operator enclosure, or the port-o-let.