# Relationship history for MSHA mine 2402102

Current hierarchy: **Sima  Muroff → Brimstone Mining Inc → MAYFLOWER MINE**

- 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

- **operator_operates_mine:** Brimstone Mining Inc → MAYFLOWER MINE; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kirk Allan R → MAYFLOWER MINE; 1997-01-01 to 2013-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Kirk Allan R → Brimstone Mining Inc; 1997-01-01 to 2013-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Sima  Muroff et al → MAYFLOWER MINE; 2013-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sima  Muroff et al → Brimstone Mining Inc; 2013-01-08 to current/open; source msha-controller-operator-history