June 20, 2016 Tracking construction material inventories on a widespread aggregates site can be a daunting proposition – and a dangerous one. Just ask Jon Layne, business development manager at Sully-Miller Contracting Co. ”[Before], somebody would physically walk the pile with a GPS backpack,” says Layne, who shared insights about Sully-Miller’s drone use during a National Stone, Sand & Gravel Association (NSSGA) webinar. “The result is a bunch of points that can then be tie