Slate Rock and Gravel Company, (known in earlier episodes as Rockhead and Quarry Cave Construction Company), Bedrock Quarrel and Gravel Company or Bedrock Rock Quarry) is a gravel pit and one of the main locations of the original series, The Flintstones and the rest of the franchise.
It is a gravel pit where Fred Flintstone works as a "bronto-crane operator" along with his boss, Mr. Slate who owns the company and works at his office and also his employees, including Fred's best friend, Barney Rubble who's also a bronto-crane operator.
According to the franchise of The Flintstones and the book, The Flintstones' Wacky Inventions, animals were used including a pterodactyl as a steam whistle with its tail being yanked by a foreman, annoucing its' commands and mammoths as rock carriers.
Dinosaurs were also used including the Brontosauruses, as Bronto-Cranes and Bronto-Jackhammers, Triceratopses as excavation drills, Tricera-Trucks and Tricera-Dozers, Tyrannosauruses as Tyrannosaura-Cranes and Stegosauruses as dump trucks, time-punch clocks and Stegosaura-Crushers.