# Relationship history for MSHA mine 2402563

Current hierarchy: **Sima  Muroff → Highland Mining LLC. → Butte Highlands**

- 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:** Ronald W  Guill → Butte Highlands; 1988-04-01 to 2011-01-27; source msha-controller-operator-history
- **operator_operates_mine:** Small Mine Development LLC → Butte Highlands; 2009-12-01 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Ronald W  Guill → Small Mine Development LLC; 2009-12-01 to 2011-01-27; source msha-controller-operator-history
- **controller_controls_mine:** Keith  Jones → Butte Highlands; 2011-01-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Jones → Small Mine Development LLC; 2011-01-28 to 2013-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Highland Mining LLC. → Butte Highlands; 2013-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sima  Muroff et al → Butte Highlands; 2013-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sima  Muroff et al → Highland Mining LLC.; 2013-07-01 to current/open; source msha-controller-operator-history