【文章摘要】 US states including Wisconsin, Texas, Illinois and Minnesota dominate the frac sand supply sector, owing to the abundance of frac-grade sand availa ble in these locations. However, the sector these states serve - fracking -has been hit hard by tumbling energy prices over the past 12 months. Volumes of frac sand shipped around North American roads, rail roads and waterways have fallen in parallel with weaker oil prices and, as a result, frac sand suppliers are anticipat ing reduced demand throughout the remainder of 2015. |