# Relationship history for MSHA mine 4000803

Current hierarchy: **Candace L Wright; Matthew S Wright → Wright Gravel Co. LLC → Cypress Creek Mine**

- 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:** Memphis Stone & Gravel Company → Cypress Creek Mine; 1950-01-01 to 1998-08-03; source msha-controller-operator-history
- **controller_controls_mine:** Richard C  Moore Et  Al → Cypress Creek Mine; 1950-01-01 to 2014-01-12; source msha-controller-operator-history
- **controller_controls_operator:** Richard C  Moore Et  Al → Memphis Stone & Gravel Company; 1950-01-01 to 1998-08-03; source msha-controller-operator-history
- **controller_controls_operator:** James J  Madison III Et Al → Memphis Stone & Gravel Company; 1950-01-01 to 1998-08-03; source msha-controller-operator-history
- **controller_controls_mine:** John H  Ford  et al → Cypress Creek Mine; 1980-05-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Camden Gravel Company → Cypress Creek Mine; 1998-08-04 to 2016-12-12; source msha-controller-operator-history
- **controller_controls_operator:** John H  Ford  et al → Camden Gravel Company; 1998-08-04 to 2016-12-12; source msha-controller-operator-history
- **controller_controls_mine:** Carey  Moore et al → Cypress Creek Mine; 2014-01-13 to 2023-01-12; source msha-controller-operator-history
- **controller_controls_operator:** Carey  Moore et al → Memphis Stone & Gravel Company; 2014-01-13 to 1998-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Richard C  Moore Jr et al → Memphis Stone & Gravel Company; 2014-01-13 to 1998-08-03; source msha-controller-operator-history
- **operator_operates_mine:** Wright Gravel Co. LLC → Cypress Creek Mine; 2016-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Candace L Wright et al → Cypress Creek Mine; 2016-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Candace L Wright et al → Wright Gravel Co. LLC; 2016-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew S Wright et al → Wright Gravel Co. LLC; 2016-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Moore III et al → Cypress Creek Mine; 2023-01-13 to 2023-12-18; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Moore III et al → Memphis Stone & Gravel Company; 2023-01-13 to 1998-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Jobe  Madison IV et al → Memphis Stone & Gravel Company; 2023-01-13 to 1998-08-03; source msha-controller-operator-history
- **controller_controls_mine:** Granite Construction Inc → Cypress Creek Mine; 2023-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Granite Construction Inc → Memphis Stone & Gravel Company; 2023-12-19 to 1998-08-03; source msha-controller-operator-history