# Relationship history for MSHA mine 4602895

Current hierarchy: **Murphy James C Jr → Jamar Coal Company Inc → Mine #1**

- 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:** Klaproth Abner H → Mine #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sandy Sue Enterprises Inc → Mine #1; 1950-01-01 to 1972-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Ricottilli Fiore → Mine #1; 1950-01-01 to 1972-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Ricottilli Fiore → Sandy Sue Enterprises Inc; 1950-01-01 to 1972-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Sandy Sue Enterprises Inc → Mine #1; 1972-03-01 to 1974-09-05; source msha-controller-operator-history
- **controller_controls_mine:** Cornelius James → Mine #1; 1972-03-01 to 1974-09-05; source msha-controller-operator-history
- **controller_controls_operator:** Cornelius James → Sandy Sue Enterprises Inc; 1972-03-01 to 1974-09-05; source msha-controller-operator-history
- **operator_operates_mine:** Big Fork Coal Company Inc → Mine #1; 1974-09-06 to 1982-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Klaproth Abner H → Big Fork Coal Company Inc; 1974-09-06 to 1982-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Big Spruce Coal Company → Mine #1; 1982-11-01 to 1984-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Brady Samuel D Iii → Mine #1; 1982-11-01 to 1984-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Brady Samuel D Iii → Big Spruce Coal Company; 1982-11-01 to 1984-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Black Silver Mining Corp → Mine #1; 1984-02-10 to 1984-04-09; source msha-controller-operator-history
- **controller_controls_mine:** Mc Gann Donald R → Mine #1; 1984-02-10 to 1984-04-09; source msha-controller-operator-history
- **controller_controls_operator:** Mc Gann Donald R → Black Silver Mining Corp; 1984-02-10 to 1984-04-09; source msha-controller-operator-history
- **operator_operates_mine:** Jamar Coal Company Inc → Mine #1; 1984-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Murphy James C Jr → Mine #1; 1984-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Murphy James C Jr → Jamar Coal Company Inc; 1984-04-10 to current/open; source msha-controller-operator-history