# Relationship history for MSHA mine 4703746

Current hierarchy: **Adam Richard  Mikl → A&M Mikl Sands LLC → Mikl 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

- **operator_operates_mine:** A&M Mikl Sands LLC → Mikl Mine; 2015-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adam Richard  Mikl → Mikl Mine; 2015-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adam Richard  Mikl → A&M Mikl Sands LLC; 2015-03-02 to current/open; source msha-controller-operator-history