# Relationship history for MSHA mine 0102238

Current hierarchy: **Knox Barney → Funnel Mineral Materials → Plantersville 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Mid-South Materials Company → Plantersville Pit; 1980-07-01 to 1994-02-02; source msha-controller-operator-history
- **controller_controls_mine:** Cole E A Jr → Plantersville Pit; 1980-07-01 to 1994-02-02; source msha-controller-operator-history
- **controller_controls_operator:** Cole E A Jr → Mid-South Materials Company; 1980-07-01 to 1994-02-02; source msha-controller-operator-history
- **operator_operates_mine:** Funnel Mineral Materials → Plantersville Pit; 1994-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Knox Barney → Plantersville Pit; 1994-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Knox Barney → Funnel Mineral Materials; 1994-02-03 to current/open; source msha-controller-operator-history