As new mines opened up in the region, extensions to the railroad began to be built.

(or by extension, the 'Buildings of England' series he began).

The extension of that testing to civilian workers, however, began only last year.

A clear break in the masonry of the basement wall shows where the extension began.

The extension of western Amager began around 1930 and was finished around 1955.

The extension began service on June 30, 2012.

An extension of the line to Chatsworth began construction on June 23, 2009.

The extension of the runway to 1900 meters will begin in 2013.

And then the extension of the nightmare began.

The eastern extension began construction, three years after its charter, in 1855.