MYSTERY solved! It's a "tree." At first, I thought the sculpture erected at Greenbank Business Park in Blackburn was a communications device belonging to Nynex across the road.

Now, I know from your report (LET, January 20) what it is supposed to be - a tree. Moreover, one costing £1,200. It is, of course, possible to buy a few proper trees with that amount of money.

I am not impressed by a few bits of stainless steel and tin, not even on an industrial site - even more reason, I think, to have trees of the environmentally-friendly, non-metallic growing variety.

HEATHER WILSON, Hudson Close, Lammack, Blackburn.

Converted for the new archive on 14 July 2000. Some images and formatting may have been lost in the conversion.