§ 35. Mr. THORNEasked the Minister of Transport whether he has received any report from the borough surveyor of West Ham and other local authorities upon the iron plates with diamond-cut tops laid by them in certain streets; and whether he can state the life of the iron plates; and whether they have proved effective to stop skidding in damp or greasy weather.
§ The PARLIAMENTARY SECRETARY to the MINISTRY of TRANSPORT (Lieut.-Colonel Headlam)These surfaces are being kept under careful observation, but as experience only extends over three years, it is not yet possible to forecast the life of the material or, at the present stage of wear and tear, to draw final conclusions as to its other properties.