# Relationship history for MSHA mine 4105799

Current hierarchy: **Littlefield Holdings, LLC; Edward W McKaughan; Mary  McKaughan → LEMA MATERIALS, LLC → Lema002**

- 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:** Charles D Cooper et al → Lema002; 2019-09-09 to 2020-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Mary  McKaughan et al → Lema002; 2020-11-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** LEMA MATERIALS, LLC → Lema002; 2025-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles D Cooper et al → LEMA MATERIALS, LLC; 2025-11-19 to 2020-11-15; source msha-controller-operator-history
- **controller_controls_operator:** Mary  McKaughan et al → LEMA MATERIALS, LLC; 2025-11-19 to 2020-11-15; source msha-controller-operator-history
- **controller_controls_operator:** Mary  McKaughan et al → LEMA MATERIALS, LLC; 2025-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward W McKaughan et al → LEMA MATERIALS, LLC; 2025-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Littlefield Holdings, LLC et al → LEMA MATERIALS, LLC; 2025-11-19 to current/open; source msha-controller-operator-history