# Relationship history for MSHA mine 3607596

Current hierarchy: **Morgan Carey-Edman Winand → C D & E Coal Company → Orchard 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:** C D & E Coal Company → Orchard Slope; 1984-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Morgan Carey-Edman Winand Et Al → Orchard Slope; 1984-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Morgan Carey-Edman Winand Et Al → C D & E Coal Company; 1984-07-01 to current/open; source msha-controller-operator-history