# Relationship history for MSHA mine 1506861

Current hierarchy: **Browning Edward G Sr → Ed Browning Tipple → Tipple**

- 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:** Hubbs Joe → Tipple; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Roy Dan → Tipple; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mill Ridge Inc → Tipple; 1973-11-29 to 1974-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Shackleford Ray → Tipple; 1973-11-29 to 1974-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Shackleford Ray → Mill Ridge Inc; 1973-11-29 to 1974-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Mill Ridge Inc → Tipple; 1974-06-01 to 1981-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Benjamin R.  Bennett → Tipple; 1974-06-01 to 1981-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin R.  Bennett → Mill Ridge Inc; 1974-06-01 to 1981-12-27; source msha-controller-operator-history
- **operator_operates_mine:** J & D Coal Company Inc → Tipple; 1981-12-28 to 1984-06-23; source msha-controller-operator-history
- **controller_controls_operator:** Hubbs Joe → J & D Coal Company Inc; 1981-12-28 to 1984-06-23; source msha-controller-operator-history
- **operator_operates_mine:** Dry Lake Coal Company Inc → Tipple; 1984-06-24 to 1989-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Roy Dan → Dry Lake Coal Company Inc; 1984-06-24 to 1989-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Ed Browning Tipple → Tipple; 1989-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Browning Edward G Sr → Tipple; 1989-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Browning Edward G Sr → Ed Browning Tipple; 1989-02-01 to current/open; source msha-controller-operator-history