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- Lab number
- Beta-53402
- Material dated
- Charcoal
- Type of date
- Archaeological
- Locality
- Contra Costa
- Date uploaded
- January 15, 2024
- Updater
- Wyoming team
- Date updated
- December 31, 2020
- Measured Age
- 1370 ± 90
- Context
- Unit 2, large amount of ash in level, 3995 Garden Rd, El Sobrante, CA; later found site buried 3-5 m deep b.s. in auger holes for footings