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Ancient discoveries (Television program)
1 videodisc (approximately 46 min.) : sound, color ; 4 3/4 in.
The Romans created a hydraulic mining system that literally blew tonnes of mountain away. How was this possible? Ancient sappers dug under the walls of the mega castle Jacobs Ford in 1178 and brought a whole castle down. How?--From container.
Originally produced for the History Channel television broadcast as a segment of the program Ancient discoveries.