08 Nov Most or all my facebook friends will never know or could guess what the little trellis in the picture. Once up on a time in the mid eighties Dr Ittyachan a friend and a great phycist asked me whther this pucture then adorning my office wall was some kind of steel work before pouring concrete. This is a microscopic particle of Microcline that Viswanathan (Nambiar) ran into in one of the microslide traverses he was identifying and counting. The Olympus microscope had a loaded camera and this picture was snapped. Todays TOI carried a essay or better say blog on the construction sand problem that the nation faces. River sand is wrong to use. It take at least a million y for one cubic meter of natural rock to turn into sand . And that too leaves behind lot of clay and roughly 2%% of what we call as fine aggregate. After the research during 1983-86 I made recommendation in my report (made 153 copies) on the research to state govt and ministry of environment that just like the coarse aggregate 25 mm the fine aggregate or construction be manufactured in a mill. Being what we are official focus is not on common good. By the Idukki arch dam consumed only manufactured coarse and fine aggregates. The Adani VizhinJam harbour would require at least 5 trillion M3 of rock products….