# Relationship history for MSHA mine 0103181

Current hierarchy: **Purser L  McLeod Jr → Anderson Road Materials LLC → Anderson Road Materials LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Harry E  Lambert → Anderson Road Materials LLC; 1996-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Montgomery Materials Company Inc → Anderson Road Materials LLC; 1999-12-01 to 2002-04-09; source msha-controller-operator-history
- **controller_controls_operator:** Harry E  Lambert → Montgomery Materials Company Inc; 1999-12-01 to 2002-04-09; source msha-controller-operator-history
- **operator_operates_mine:** Montgomery Materials → Anderson Road Materials LLC; 2002-04-10 to 2002-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Frank  Foley → Anderson Road Materials LLC; 2002-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank  Foley → Montgomery Materials; 2002-04-10 to 2002-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Anderson Road Materials LLC → Anderson Road Materials LLC; 2002-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Purser L  McLeod Jr  et al → Anderson Road Materials LLC; 2002-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Purser L  McLeod Jr  et al → Anderson Road Materials LLC; 2002-07-01 to current/open; source msha-controller-operator-history