# Relationship history for MSHA mine 3402126

Current hierarchy: **Richard L Johnson; Isaac  Belak → J & B Stone, LLC → Martin 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Michael D  Johnson → Martin Mine; 2005-01-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Maranatha Stone, LLC → Martin Mine; 2012-04-17 to 2015-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Michael D  Johnson → Maranatha Stone, LLC; 2012-04-17 to 2015-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Richard L Johnson et al → Martin Mine; 2015-06-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & B Stone, LLC → Martin Mine; 2015-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard L Johnson et al → J & B Stone, LLC; 2015-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Isaac  Belak et al → J & B Stone, LLC; 2015-12-02 to current/open; source msha-controller-operator-history