# Relationship history for MSHA mine 3608246

Current hierarchy: **Stephen  Perchinski → Red Brush Coal Company → 7 Vein Slope**

- 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:** K M A Coal Company → 7 Vein Slope; 1991-05-01 to 1991-11-19; source msha-controller-operator-history
- **controller_controls_mine:** Stanchick Anthony → 7 Vein Slope; 1991-05-01 to 1991-11-19; source msha-controller-operator-history
- **controller_controls_operator:** Stanchick Anthony → K M A Coal Company; 1991-05-01 to 1991-11-19; source msha-controller-operator-history
- **operator_operates_mine:** Eagle Run Coal Company Inc → 7 Vein Slope; 1991-11-20 to 1992-06-09; source msha-controller-operator-history
- **controller_controls_mine:** Nestico Bernard J → 7 Vein Slope; 1991-11-20 to 1995-05-24; source msha-controller-operator-history
- **controller_controls_operator:** Nestico Bernard J → Eagle Run Coal Company Inc; 1991-11-20 to 1992-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Red Brush Coal Company → 7 Vein Slope; 1992-06-10 to 1994-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Stankiewicz Frank Et Al → 7 Vein Slope; 1992-06-10 to 1994-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Stankiewicz Frank Et Al → Red Brush Coal Company; 1992-06-10 to 1994-04-10; source msha-controller-operator-history
- **operator_operates_mine:** Red Brush Coal Company → 7 Vein Slope; 1994-04-11 to 1994-09-05; source msha-controller-operator-history
- **controller_controls_mine:** Perchinski Steve-Shawn Kelly Et Al → 7 Vein Slope; 1994-04-11 to 1994-09-05; source msha-controller-operator-history
- **controller_controls_operator:** Perchinski Steve-Shawn Kelly Et Al → Red Brush Coal Company; 1994-04-11 to 1994-09-05; source msha-controller-operator-history
- **operator_operates_mine:** Red Brush Coal Company → 7 Vein Slope; 1994-09-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen  Perchinski → 7 Vein Slope; 1994-09-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen  Perchinski → Red Brush Coal Company; 1994-09-06 to current/open; source msha-controller-operator-history