What irritates me beyond measure is that so many environmentalist, particularly those at the extreme end spend all their time finding things they can get concerned about but never offer any carefully thought through alternatives. It is usually those actually in the industries concerned that do this.
A trawl of the literature shows that, in the extraction and construction industry there are already developments that are leading to a reduced use of sand and other aggregates. In this country much of the rubble from demolished buildings is being broken up ground into small even sized pieces and reused on site, which also means a reduction of lorry traffic removing it. In Hong Kong they are grinding recycled glass down to make the fine sand needed in concrete and other alternatives are also being investigated
Parents-in-Law. What do/did you call them?