# Relationship history for MSHA mine 3608398

Current hierarchy: **The Estate of Martha A. Bender; Edward C Bender → E P Bender Coal Company → EPB Strip**

- 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:** Martha A  Bender → EPB Strip; 1950-01-01 to 2016-08-07; source msha-controller-operator-history
- **operator_operates_mine:** E P Bender Coal Company → EPB Strip; 1993-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martha A  Bender → E P Bender Coal Company; 1993-03-01 to 2016-08-07; source msha-controller-operator-history
- **controller_controls_mine:** The Estate of Martha A. Bender et al → EPB Strip; 2016-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Estate of Martha A. Bender et al → E P Bender Coal Company; 2016-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward C Bender et al → E P Bender Coal Company; 2016-08-08 to current/open; source msha-controller-operator-history