Cemeteries don't install their own head stones--I do, with simple machines only! IamA carpenter turned small business headstone installer guy! AMA!
I got into the biz this year with my neighbour, have been all over Alberta, Canada installing granite stones and slabs up to about 1,000 lbs (450 kg). Generally I install civilian stones, but I was quite happy to do a maintenance contract with the Commonwealth War Graves Commission, and little side jobs with the caretakers I meet.
My job entails receiving, delivering, installing, maintenance, warranty jobs, and basically driving all over the province with country tunes and enough coffee to stop someone's heart.
Here's a letter of recommendation given to me by LCol (Rtd) Andre Michaud! Woo! http://imgur.com/pdk8vlD
Edit: I'm happy to answer more questions but I have tools to exchange and quotes to put in. Keep 'em coming!