This cache was placed in a historic cemetary just outside of Francestown, NH. The gravestones here are made out of soapstone:
Location: About a half-mile east of the center of Francestown village at the intersection of Route 136 and Potash Road. (The cemetary is just before this historical landmark, but won't be found on any online map)
The back story: Daniel Fuller discovered soapstone by accident on his rocky land in Francestown in the early 1800s, though some reports say Fuller discovered soapstone in 1794 and began quarrying it in 1802.
Soapstone is a soft rock consisting largely of talc with varying amounts of other minerals. The soapstone in Francestown was considered to be the finest quality in the world, having no flaws, rusty streaks or hard spots.
This material was prized for its ease of cutting and shaping and also for its heat retention and was used for various purposes, including foot warmers, woodstoves, hearths, sinks and even pencils for slates. (and gravestones).
The soapstone was quarried until 1912 when blasting during the quarrying process ignited sparks, which set two adjacent farms on fire. The farms were burned to the ground and the ensuing legal issues caused the Soapstone company to go bankrupt and abruptly end operations.