Noah Ready-Campbell was working at Google when the company took an interest in developing autonomous automobiles. To him, it seemed a good idea to use that technology on heavy construction machinery, where work is repetitive and dangerous, and skilled labor comes at a premium. So, he launched Built Robotics in California, and the company only recently deployed its first autonomous machine on an actual construction site. A skidsteer, with the unlikely name Mary Anne, was put to work by CMG Construction of Billings Montana, to grade land for The Den Bar and Casino. Mary Anne navigated with GPS and used sensors to gauge the force needed to push the dirt in front of it and how much dirt was in the bucket. LIDAR was used to keep the machine from wandering off, while human engineers on laptops tweaked algorithms and served as the last line of defense. Built Robotics has also developed a pallet fork, but engineers assure the public it will be awhile before the technology makes heavy-equipment operators obsolete.