# Relationship history for MSHA mine 0102372

Current hierarchy: **S T  Bunn Jr → Bunn Brothers Materials Inc → MARION COUNTY ROCK**

- 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:** Rock City Rock Inc → MARION COUNTY ROCK; 1981-10-01 to 1993-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Clifton  Deavours et al → MARION COUNTY ROCK; 1981-10-01 to 1993-05-11; source msha-controller-operator-history
- **controller_controls_operator:** Clifton  Deavours et al → Rock City Rock Inc; 1981-10-01 to 1993-05-11; source msha-controller-operator-history
- **operator_operates_mine:** Marion County Rock Company → MARION COUNTY ROCK; 1993-05-12 to 1999-09-21; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Prescott → MARION COUNTY ROCK; 1993-05-12 to 1999-09-21; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Prescott → Marion County Rock Company; 1993-05-12 to 1999-09-21; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Bunn et al → MARION COUNTY ROCK; 1996-11-14 to 2021-03-12; source msha-controller-operator-history
- **operator_operates_mine:** Bunn Brothers Materials Inc → MARION COUNTY ROCK; 1999-09-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Bunn et al → Bunn Brothers Materials Inc; 1999-09-22 to 2021-03-12; source msha-controller-operator-history
- **controller_controls_operator:** S T  Bunn Jr et al → Bunn Brothers Materials Inc; 1999-09-22 to 2021-03-12; source msha-controller-operator-history
- **controller_controls_mine:** S T  Bunn Jr → MARION COUNTY ROCK; 2021-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** S T  Bunn Jr → Bunn Brothers Materials Inc; 2021-03-13 to current/open; source msha-controller-operator-history