# Relationship history for MSHA mine 2103717

Current hierarchy: **Anthony  Scepaniak; Joseph  Scepaniak → WM. D. Scepaniak Inc → CR #3**

- 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

- **controller_controls_mine:** William J  Scepaniak et al → CR #3; 1981-07-01 to 2021-04-30; source msha-controller-operator-history
- **operator_operates_mine:** WM. D. Scepaniak Inc → CR #3; 2010-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William J  Scepaniak et al → WM. D. Scepaniak Inc; 2010-08-18 to 2021-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Joseph  Scepaniak et al → CR #3; 2021-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Scepaniak et al → WM. D. Scepaniak Inc; 2021-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Scepaniak et al → WM. D. Scepaniak Inc; 2021-05-01 to current/open; source msha-controller-operator-history