Open questions: Norfolk

Where sources disagree, MineArchive keeps both accounts rather than picking one; where a fact could not be settled, the record says so. 8 such claims on 1 records. All regions.

Grime's Graves

• Grime's Graves was mined from about 2600 BC until about 2100 BC. (disputed)
• Grime's Graves was worked between c. 2600 and c. 2300 BC. (disputed)
• The Grime's Graves mines operated during the later Neolithic, 2650-2400 BC. (disputed)
• The deepest shafts, in the south of the site, are up to 13 metres deep; in the north and west, pits of 3-6 metres were enough. (disputed)
• The largest shafts are more than 14 m deep and 12 m in diameter at the surface. (disputed)
• The miners used shovels made from cattle bones. (disputed)
• The miners probably used wooden shovels, inferred by analogy with other flint mines. (disputed)
• A medium-depth shaft could have yielded about 60 tons of flint, enough for up to 10,000 polished axes; the site may have produced 16,000-18,000 tonnes. (uncertain)