# Relationship history for MSHA mine 1519807

Current hierarchy: **Conrad  Whitaker; Jonathan  Whitaker → DENALI ENERGY GROUP LLC → AUGER NO. 144**

- 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:** Jonathan  Whitaker et al → AUGER NO. 144; 2010-09-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Matthew S Bolling et al → AUGER NO. 144; 2016-09-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** RESOURCE MANAGEMENT & RECOVERY LLC → AUGER NO. 144; 2017-03-08 to 2018-12-23; source msha-controller-operator-history
- **controller_controls_operator:** Matthew S Bolling et al → RESOURCE MANAGEMENT & RECOVERY LLC; 2017-03-08 to 2018-12-23; source msha-controller-operator-history
- **controller_controls_operator:** Rebecca F Bolling et al → RESOURCE MANAGEMENT & RECOVERY LLC; 2017-03-08 to 2018-12-23; source msha-controller-operator-history
- **operator_operates_mine:** DENALI ENERGY GROUP LLC → AUGER NO. 144; 2018-12-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan  Whitaker et al → DENALI ENERGY GROUP LLC; 2018-12-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Conrad  Whitaker et al → DENALI ENERGY GROUP LLC; 2018-12-24 to current/open; source msha-controller-operator-history