History That the gunnis was an element of mining in ancient times has been shown by archaeological investigation, such as that performed in the 1990s at Bir Umm Fawakhir, an ancient gold mine in Egypt. The exploration revealed that some 20th-century drives had broken into ancient gunnises which were filled in by rocks that had fractured off the hanging wall, or fallen from above. It was discovered that a wall had been built around one of the gunnises in Roman or Byzantine times to stop material from falling in.
History That the gunnis was an element of mining in ancient times has been shown by archaeological investigation, such as that performed in the 1990s at Bir Umm Fawakhir an ancient gold mine in Egypt The exploration revealed that some 20th-century drives had broken into ancient gunnises which were filled in by rocks that had fractured off the hanging wall, or fallen from above. It was discovered that a wall had been built around one of the gunnises in Roman or Byzantine times to stop material from falling in