# Relationship history for MSHA mine 1601158

Current hierarchy: **Gary  Joiner; Margaret  Joiner → Joiner Farms & Gravel → Joiner Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Gary  Joiner et al → Joiner Pit; 1986-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Joiner Stock Farms → Joiner Pit; 1988-03-01 to 1989-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Joiner et al → Joiner Pit; 1988-03-01 to 1989-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Joiner et al → Joiner Stock Farms; 1988-03-01 to 1989-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Joiner Farms & Gravel → Joiner Pit; 1989-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Joiner et al → Joiner Farms & Gravel; 1989-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Margaret  Joiner et al → Joiner Farms & Gravel; 1989-03-01 to current/open; source msha-controller-operator-history