Arthur C. Clarke

space elevator n.	1975 A. C. Clarke in Future Space Programs 1975 (Hearings Before the Subcommittee on Space Science & Applications, Committee on Science & Technology, U.S. House of Representatives) 198 Imagine my surprise when I saw that the Russians had come up with the same idea quite independently—the Space Elevator.
subterrene n.	1956 A. C. Clarke City & Stars i. 6 With a deafening screech of metal upon rock…the subterrene smashed through the wall and came to rest beside them.