# Relationship history for MSHA mine 1519689

Current hierarchy: **Edward A  Asbury → Skyway Strip, Inc. → HWM#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

- **controller_controls_mine:** James H  Booth et al → HWM#1; 2000-08-30 to 2019-06-15; source msha-controller-operator-history
- **controller_controls_mine:** Edward A  Asbury → HWM#1; 2010-12-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C W Augering Inc → HWM#1; 2012-12-12 to 2019-11-25; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → C W Augering Inc; 2012-12-12 to 2019-06-15; source msha-controller-operator-history
- **controller_controls_mine:** J Mark  Campbell → HWM#1; 2019-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Mark  Campbell → C W Augering Inc; 2019-06-16 to 2019-11-25; source msha-controller-operator-history
- **operator_operates_mine:** Skyway Strip, Inc. → HWM#1; 2019-11-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward A  Asbury → Skyway Strip, Inc.; 2019-11-26 to current/open; source msha-controller-operator-history