# Relationship history for MSHA mine 1519484

Current hierarchy: **Americas Energy Company → Evans Coal Corp → Mine #2**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Barbara  Evans et al → Mine #2; 1987-12-28 to 2010-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert C  Gregory Jr → Mine #2; 2010-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Americas Energy Company → Mine #2; 2010-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Diamond Energy, Inc. → Mine #2; 2010-04-14 to 2011-04-03; source msha-controller-operator-history
- **controller_controls_operator:** Robert C  Gregory Jr → Black Diamond Energy, Inc.; 2010-04-14 to 2011-04-03; source msha-controller-operator-history
- **operator_operates_mine:** Recoal, LLC → Mine #2; 2011-04-04 to 2011-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Wilk  Renfro → Mine #2; 2011-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wilk  Renfro → Recoal, LLC; 2011-04-04 to 2011-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Evans Coal Corp → Mine #2; 2011-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Americas Energy Company → Evans Coal Corp; 2011-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barbara  Evans et al → Evans Coal Corp; 2011-07-12 to 2010-03-31; source msha-controller-operator-history