# Relationship history for MSHA mine 3004037

Current hierarchy: **Mark A Lindstrom; Steve A Lindstrom → Stark Gravel Products LLC → Strunk Road 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:** Stark Gravel Products LLC → Strunk Road Mine; 2019-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark A Lindstrom et al → Strunk Road Mine; 2019-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark A Lindstrom et al → Stark Gravel Products LLC; 2019-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve A Lindstrom et al → Stark Gravel Products LLC; 2019-07-19 to current/open; source msha-controller-operator-history