# Relationship history for MSHA mine 4104505

Current hierarchy: **James Construction Group, LLC → Miller Springs Materials → Miller Springs Materials**

- 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:** Miller Springs Material → Miller Springs Materials; 2004-11-16 to 2010-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Miller Springs Materials et al → Miller Springs Materials; 2004-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Miller Springs Materials et al → Miller Springs Material; 2004-11-16 to 2010-10-31; source msha-controller-operator-history
- **controller_controls_operator:** TBT Management et al → Miller Springs Material; 2004-11-16 to 2010-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Miller Springs Materials → Miller Springs Materials; 2010-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James Construction Group, LLC → Miller Springs Materials; 2010-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James Construction Group, LLC → Miller Springs Materials; 2010-11-01 to current/open; source msha-controller-operator-history