D.—l

Mast being raised.

This method of erection was necessary on account of all-welded construction adopted to ensure electric continuity throughout the structure.

Mast in Position.

For aircraft protection, it is painted in bands of black and orange, and is being equipped with a beacon light. 170 FT. RADIO MAST FOR CHRISTCHURCH: THE FIRST OF A SERIES FOR THE STATIONS OF THE NATIONAL COMMERCIAL BROADCASTING SERVICES.