# Relationship history for MSHA mine 4101786

Current hierarchy: **Lhoist Group → Martin Marietta Minerals, Inc. → Nolanville Mine & Mill**

- 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:** Bandas Industries Inc → Nolanville Mine & Mill; 1950-01-01 to 1994-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Fred  Bandas → Nolanville Mine & Mill; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Bandas → Bandas Industries Inc; 1950-01-01 to 1994-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Franklin Industries Inc → Nolanville Mine & Mill; 1950-01-01 to 2006-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Chemical Lime Company → Nolanville Mine & Mill; 1950-01-01 to 1998-12-30; source msha-controller-operator-history
- **operator_operates_mine:** Franklin Industries Incorporated → Nolanville Mine & Mill; 1994-03-01 to 2012-01-19; source msha-controller-operator-history
- **controller_controls_operator:** Franklin Industries Inc → Franklin Industries Incorporated; 1994-03-01 to 2006-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Lhoist Group → Nolanville Mine & Mill; 1998-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lhoist Group → Nolanville Mine & Mill; 2006-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lhoist Group → Franklin Industries Incorporated; 2006-12-01 to 2012-01-19; source msha-controller-operator-history
- **operator_operates_mine:** Lhoist North America of Texas, LLC → Nolanville Mine & Mill; 2012-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lhoist Group → Lhoist North America of Texas, LLC; 2012-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chemical Lime Company → Lhoist North America of Texas, LLC; 2012-01-20 to 1998-12-30; source msha-controller-operator-history