Yeah...I'm a purist...I don't like stone. OK, now that I've gotten that out of the way... I'm building a super-duper mobile miner/refinery thingy, and I thought it would be spiffy (excuse the pun) if I could eject the excess stone away from the vehicle while mining. I once built a gravity generator cannon that worked on planets, but have since lost the blueprint. I tried reproducing it for this application, but the stones just sit there looking like...well...stones instead of launching horizontally away from the vehicle. Are gravity generators now completely disabled on planets?