# Relationship history for MSHA mine 0901215

Current hierarchy: **William Richard  Slade; Jeff  Graham → G & S Source Material LLC → Hinesville Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Georgia Sand → Hinesville Mine; 2011-05-09 to 2015-06-28; source msha-controller-operator-history
- **controller_controls_mine:** William Justin  Osteen → Hinesville Mine; 2011-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William Justin  Osteen → Georgia Sand; 2011-05-09 to 2015-06-28; source msha-controller-operator-history
- **operator_operates_mine:** G & S Source Material LLC → Hinesville Mine; 2015-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William Richard  Slade et al → Hinesville Mine; 2015-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William Richard  Slade et al → G & S Source Material LLC; 2015-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Graham et al → G & S Source Material LLC; 2015-06-29 to current/open; source msha-controller-operator-history