# Relationship history for MSHA mine 3607276

Current hierarchy: **Ricky K Bender; Rick E Bender → Sherman Mountain Coal Company Inc. → Sherman Breaker**

- 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:** Shermans Coal Company → Sherman Breaker; 1982-03-01 to 1991-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Jacques E  Hatter → Sherman Breaker; 1982-03-01 to 1991-01-29; source msha-controller-operator-history
- **controller_controls_operator:** Jacques E  Hatter → Shermans Coal Company; 1982-03-01 to 1991-01-29; source msha-controller-operator-history
- **operator_operates_mine:** Morrison Coal Company Inc → Sherman Breaker; 1991-01-30 to 1994-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Anton H  Brockelman → Sherman Breaker; 1991-01-30 to 1994-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Anton H  Brockelman → Morrison Coal Company Inc; 1991-01-30 to 1994-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Sherman Mountain Coal Company Inc. → Sherman Breaker; 1994-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William C  Vought → Sherman Breaker; 1994-06-01 to 2020-08-31; source msha-controller-operator-history
- **controller_controls_operator:** William C  Vought → Sherman Mountain Coal Company Inc.; 1994-06-01 to 2020-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Ricky K Bender et al → Sherman Breaker; 2020-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ricky K Bender et al → Sherman Mountain Coal Company Inc.; 2020-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick E Bender et al → Sherman Mountain Coal Company Inc.; 2020-09-01 to current/open; source msha-controller-operator-history