# Relationship history for MSHA mine 2602082

Current hierarchy: **Gary  Bomberger; Gary  Archie Sr; Tom  Adams → All-Lite Materials → Sierra Stone Quarry**

- 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:** All-Lite Aggregate → Sierra Stone Quarry; 1988-09-01 to 1991-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Norman L  Dianda  et al → Sierra Stone Quarry; 1988-09-01 to 1991-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Norman L  Dianda  et al → All-Lite Aggregate; 1988-09-01 to 1991-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Sierra Stone Company → Sierra Stone Quarry; 1991-09-01 to 1999-11-01; source msha-controller-operator-history
- **controller_controls_mine:** Edwin  Pautler → Sierra Stone Quarry; 1991-09-01 to 1999-11-01; source msha-controller-operator-history
- **controller_controls_operator:** Edwin  Pautler → Sierra Stone Company; 1991-09-01 to 1999-11-01; source msha-controller-operator-history
- **controller_controls_mine:** RMC Group PLC → Sierra Stone Quarry; 1999-07-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** All-Lite Aggregate → Sierra Stone Quarry; 1999-11-02 to 2001-12-31; source msha-controller-operator-history
- **controller_controls_mine:** RMC Group PLC → Sierra Stone Quarry; 1999-11-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RMC Group PLC → All-Lite Aggregate; 1999-11-02 to 2001-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Sierra Stone Quarry; 2001-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** RMC Nevada, Inc. → Sierra Stone Quarry; 2002-01-01 to 2005-12-31; source msha-controller-operator-history
- **controller_controls_operator:** RMC Group PLC → RMC Nevada, Inc.; 2002-01-01 to 2005-12-31; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials LP → Sierra Stone Quarry; 2006-01-01 to 2008-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials LP; 2006-01-01 to 2008-07-31; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials Pacific, LLC → Sierra Stone Quarry; 2008-08-01 to 2023-02-21; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Sierra Stone Quarry; 2008-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials Pacific, LLC; 2008-08-01 to 2023-02-21; source msha-controller-operator-history
- **operator_operates_mine:** All-Lite Materials → Sierra Stone Quarry; 2023-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tom  Adams et al → Sierra Stone Quarry; 2023-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tom  Adams et al → All-Lite Materials; 2023-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Archie Sr et al → All-Lite Materials; 2023-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Bomberger et al → All-Lite Materials; 2023-02-22 to current/open; source msha-controller-operator-history