# Relationship history for MSHA mine 3503873

Current hierarchy: **Chris  Dials → Marsh Creek Corp. → Jaw 1**

- 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:** Chris Dials Contracting → Jaw 1; 2018-10-30 to 2020-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Dials → Jaw 1; 2018-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Dials → Chris Dials Contracting; 2018-10-30 to 2020-05-11; source msha-controller-operator-history
- **operator_operates_mine:** Marsh Creek Corp. → Jaw 1; 2020-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Dials → Jaw 1; 2020-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Dials → Marsh Creek Corp.; 2020-05-12 to current/open; source msha-controller-operator-history