# Relationship history for MSHA mine 0800959

Current hierarchy: **Scott A  Haire; Robert W  Stout → Alternative Materials, LLC → Marianna Hi-Cal / Alternative 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Marianna Lime Products Inc → Marianna Hi-Cal / Alternative Materials; 1980-05-01 to 1993-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Leonard  Ratzlaff → Marianna Hi-Cal / Alternative Materials; 1980-05-01 to 1993-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Leonard  Ratzlaff → Marianna Lime Products Inc; 1980-05-01 to 1993-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Marianna Lime Products Incorporated → Marianna Hi-Cal / Alternative Materials; 1994-01-01 to 2006-11-28; source msha-controller-operator-history
- **controller_controls_mine:** C Leon  Brooks → Marianna Hi-Cal / Alternative Materials; 1994-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** C Leon  Brooks → Marianna Lime Products Incorporated; 1994-01-01 to 2006-11-28; source msha-controller-operator-history
- **operator_operates_mine:** Marianna Limestone LLC → Marianna Hi-Cal / Alternative Materials; 2006-11-29 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Leon  Brooks et al → Marianna Hi-Cal / Alternative Materials; 2006-11-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leon  Brooks et al → Marianna Limestone LLC; 2006-11-29 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Austin  Forman et al → Marianna Limestone LLC; 2006-11-29 to 2013-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Marianna Hi-Cal LLC → Marianna Hi-Cal / Alternative Materials; 2013-07-01 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_mine:** C Leon  Brooks → Marianna Hi-Cal / Alternative Materials; 2013-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** C Leon  Brooks → Marianna Hi-Cal LLC; 2013-07-01 to 2020-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Alternative Materials, LLC → Marianna Hi-Cal / Alternative Materials; 2020-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott A  Haire et al → Marianna Hi-Cal / Alternative Materials; 2020-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott A  Haire et al → Alternative Materials, LLC; 2020-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert W  Stout et al → Alternative Materials, LLC; 2020-06-01 to current/open; source msha-controller-operator-history