# Relationship history for MSHA mine 1517269

Current hierarchy: **Smith Swonnie → Tug Coal Company 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

- **operator_operates_mine:** Dale Wayne Coal Inc → #1; 1992-07-01 to 1992-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Elliott Gary & Larry → #1; 1992-07-01 to 1992-08-30; source msha-controller-operator-history
- **controller_controls_operator:** Elliott Gary & Larry → Dale Wayne Coal Inc; 1992-07-01 to 1992-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Falls Mining Inc → #1; 1992-08-31 to 1994-04-28; source msha-controller-operator-history
- **controller_controls_mine:** Lanham Roy Et Al → #1; 1992-08-31 to 1994-04-28; source msha-controller-operator-history
- **controller_controls_operator:** Lanham Roy Et Al → Falls Mining Inc; 1992-08-31 to 1994-04-28; source msha-controller-operator-history
- **operator_operates_mine:** Tug Coal Company Inc → #1; 1994-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Smith Swonnie → #1; 1994-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Smith Swonnie → Tug Coal Company Inc; 1994-04-29 to current/open; source msha-controller-operator-history