# Relationship history for MSHA mine 3607558

Current hierarchy: **Randy C  Rothermel → Rothermel Coal Company → 11 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:** Six Par Coal Company → 11 Vein Slope; 1984-03-01 to 1992-09-24; source msha-controller-operator-history
- **controller_controls_mine:** Knorr Wallace Et Al → 11 Vein Slope; 1984-03-01 to 1992-09-24; source msha-controller-operator-history
- **controller_controls_operator:** Knorr Wallace Et Al → Six Par Coal Company; 1984-03-01 to 1992-09-24; source msha-controller-operator-history
- **operator_operates_mine:** C & B Mining Company → 11 Vein Slope; 1992-09-25 to 1993-10-07; source msha-controller-operator-history
- **controller_controls_mine:** Lorenz Cynthia → 11 Vein Slope; 1992-09-25 to 1993-10-07; source msha-controller-operator-history
- **controller_controls_operator:** Lorenz Cynthia → C & B Mining Company; 1992-09-25 to 1993-10-07; source msha-controller-operator-history
- **controller_controls_mine:** Randy C  Rothermel et al → 11 Vein Slope; 1993-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rothermel Coal Company → 11 Vein Slope; 1993-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy C  Rothermel et al → Rothermel Coal Company; 1993-10-08 to current/open; source msha-controller-operator-history