# Relationship history for MSHA mine 1516946

Current hierarchy: **Watts Larry C → Br Coal Company → Br Surface #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

- **operator_operates_mine:** B E T Inc Of Catlettsburg → Br Surface #1; 1990-08-01 to 1991-11-13; source msha-controller-operator-history
- **controller_controls_mine:** Ball Talbert → Br Surface #1; 1990-08-01 to 1991-11-13; source msha-controller-operator-history
- **controller_controls_operator:** Ball Talbert → B E T Inc Of Catlettsburg; 1990-08-01 to 1991-11-13; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Energy Inc → Br Surface #1; 1991-11-14 to 1994-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Hugh M  Caperton → Br Surface #1; 1991-11-14 to 1994-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Hugh M  Caperton → Dominion Energy Inc; 1991-11-14 to 1994-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Meral  Williams et al → Br Surface #1; 1993-05-06 to 1994-06-23; source msha-controller-operator-history
- **operator_operates_mine:** B & C Mining Inc → Br Surface #1; 1994-03-08 to 1994-06-23; source msha-controller-operator-history
- **controller_controls_operator:** Meral  Williams et al → B & C Mining Inc; 1994-03-08 to 1994-06-23; source msha-controller-operator-history
- **operator_operates_mine:** E R M Coal Company → Br Surface #1; 1994-06-24 to 1996-10-22; source msha-controller-operator-history
- **controller_controls_mine:** Elliott Ricky → Br Surface #1; 1994-06-24 to 1996-10-22; source msha-controller-operator-history
- **controller_controls_operator:** Elliott Ricky → E R M Coal Company; 1994-06-24 to 1996-10-22; source msha-controller-operator-history
- **operator_operates_mine:** Emma Coal Company → Br Surface #1; 1996-10-23 to 1997-08-03; source msha-controller-operator-history
- **controller_controls_mine:** West Steven → Br Surface #1; 1996-10-23 to 1997-08-03; source msha-controller-operator-history
- **controller_controls_operator:** West Steven → Emma Coal Company; 1996-10-23 to 1997-08-03; source msha-controller-operator-history
- **operator_operates_mine:** Br Coal Company → Br Surface #1; 1997-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Watts Larry C → Br Surface #1; 1997-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Watts Larry C → Br Coal Company; 1997-08-04 to current/open; source msha-controller-operator-history