Between Lakehurst and Woodmansie, there are no other businesses to take rail except for the current Hanson (former Clayton)sand mine (open pit). Most of the whole area is undevelopable anyway due to the Pinelands Commission regulations that control the overall area. Unless someone actually has seen rails at the former Heritage Minerals facility, I do not believe they ever had any service. They had been closed for a long time now. The property was last bought by Hovanian (land developer) but in an agreement with the State regarding radioactive residues dating back to the mid-80's, Hovanians last plan, as of a few years ago, was to develop something like 600 acres as housing and the remaining few thousand acres are to remain undeveloped in perpetuity.
The only thing that looked like a siding was the passing siding thru downtown Lakehurst that stretches south of Union St over the creek. And as previously mentioned, there had been a Wye connection at one time that connected over to the (now) TRIT whose leg started just north of said creek so traffic from down south could get over to the CNJ Barnegat branch and vice versa.
Our forum member, Steam man, posted a while back that there weren't any sidings off the Southern, south of Lakehurst, until Chatsworth (other than Woodmansie).
See
http://railroad.net/forums/viewtopic.php?f=79&t=32127 which includes the link of track charts for the CNJ (dated 1963).