# Relationship history for MSHA mine 4801205

Current hierarchy: **Jerry R  Means; Craig  Means → K G Construction Company → John Christian 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

- **controller_controls_mine:** Jerry R  Means et al → John Christian Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K G Construction Company → John Christian Pit; 1978-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry R  Means et al → K G Construction Company; 1978-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig  Means et al → K G Construction Company; 1978-12-01 to current/open; source msha-controller-operator-history