# Relationship history for MSHA mine 0503979

Current hierarchy: **Thomas M  Eve; Linda  Kellerman → Butala Construction Company → Jack David 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:** Frank  Butala → Jack David Pit; 1981-03-01 to 2014-01-08; source msha-controller-operator-history
- **operator_operates_mine:** Butala Construction Company → Jack David Pit; 1984-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank  Butala → Butala Construction Company; 1984-08-01 to 2014-01-08; source msha-controller-operator-history
- **controller_controls_mine:** Linda  Kellerman et al → Jack David Pit; 2014-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Linda  Kellerman et al → Butala Construction Company; 2014-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas M  Eve et al → Butala Construction Company; 2014-01-09 to current/open; source msha-controller-operator-history