# Relationship history for MSHA mine 3401344

Current hierarchy: **Ernestine H Potter → J C Potter Ranch → POTTER MINE**

- 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:** Old Soldier Barite Inc & Universal Barite Inc → POTTER MINE; 1981-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Old Soldier Minerals → POTTER MINE; 1981-10-01 to 1988-02-29; source msha-controller-operator-history
- **controller_controls_operator:** Old Soldier Barite Inc & Universal Barite Inc → Old Soldier Minerals; 1981-10-01 to 1988-02-29; source msha-controller-operator-history
- **operator_operates_mine:** Old Soldier Ltd → POTTER MINE; 1988-03-01 to 1995-09-04; source msha-controller-operator-history
- **controller_controls_mine:** JFB Inc et al → POTTER MINE; 1988-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** JFB Inc et al → Old Soldier Ltd; 1988-03-01 to 1995-09-04; source msha-controller-operator-history
- **operator_operates_mine:** J C Potter Ranch → POTTER MINE; 1995-09-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ernestine H Potter → POTTER MINE; 1995-09-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ernestine H Potter → J C Potter Ranch; 1995-09-05 to current/open; source msha-controller-operator-history