# Relationship history for MSHA mine 1516210

Current hierarchy: **Bryant Marion → Misty Mountain Mining Inc → #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:** Smith C Y → #1; 1986-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C Y Smith Inc → #1; 1987-10-01 to 1988-04-09; source msha-controller-operator-history
- **controller_controls_operator:** Smith C Y → C Y Smith Inc; 1987-10-01 to 1988-04-09; source msha-controller-operator-history
- **operator_operates_mine:** Whitley Gap Mining Inc → #1; 1988-04-10 to 1989-09-17; source msha-controller-operator-history
- **controller_controls_mine:** Moore Gilbert → #1; 1988-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moore Gilbert → Whitley Gap Mining Inc; 1988-04-10 to 1989-09-17; source msha-controller-operator-history
- **operator_operates_mine:** N & N Mining Company → #1; 1989-09-18 to 1990-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Brown Bleve & Wayne Jones → #1; 1989-09-18 to 1990-04-02; source msha-controller-operator-history
- **controller_controls_operator:** Brown Bleve & Wayne Jones → N & N Mining Company; 1989-09-18 to 1990-04-02; source msha-controller-operator-history
- **operator_operates_mine:** Old Hickory Mining Inc → #1; 1990-04-03 to 1992-10-29; source msha-controller-operator-history
- **controller_controls_mine:** Shackleford Nathan Et Al → #1; 1990-04-03 to 1992-10-29; source msha-controller-operator-history
- **controller_controls_operator:** Shackleford Nathan Et Al → Old Hickory Mining Inc; 1990-04-03 to 1992-10-29; source msha-controller-operator-history
- **operator_operates_mine:** Misty Mountain Mining Inc → #1; 1992-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bryant Marion → #1; 1992-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bryant Marion → Misty Mountain Mining Inc; 1992-10-30 to current/open; source msha-controller-operator-history