- Written by Mark Kuhar
August 20, 2012 – Preliminary reports from the USGS indicate second-quarter production will take a sizable jump over the first quarter of the year. Crushed stone production will reportedly rise a healthy 47 percent over the first quarter; sand and gravel a whopping 63 percent; and cement 42 percent. Year over year the increases are much more modest, but still trend upwards. The rise mirrors an increase in housing starts and construction spending, and is a good sign coming in advance of any bump Map-21 may give the market.