Written question asked by Simon Hughes (Liberal Democrat), in the House of Commons. It was due for an answer on Thursday, 10 December 1992. It was answered by Kenneth Carlisle (Conservative) on Thursday, 10 December 1992 on behalf of the Department of Transport.

Dept of Transport

Question: What information his Department has on the effect of salt used during cold weather on (a) trees, (b) grass verges and (c) concrete; what research his Department has commissioned or carried out on these matters. - Inc ref to Forestry Commission bulletin "De-icing Salt Damage to Trees & Shrubs" published in 1991 & fact that Forestry Commission is following up with a survey of salt damage to roadside trees in London (preliminary report has been issued & final report is due for publication later this month).

Secondary information