Temporary Way
During construction of a tunnel it is often convenient to install a temporary railway particularly to remove spoil. This temporary railway is often narrow gauge so that it can be double track, which facilitates the operation of empty and loaded trains at the same time. The temporary way is replaced by the permanent way at completion, thus explaining the term Perway.
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Famous quotes containing the word temporary:
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—Julius Caesar [Gaius Julius Caesar] (100–44 B.C.)