# Relationship history for MSHA mine 2800719

Current hierarchy: **Mc Omber Richard → Heritage Minerals Inc → Heritage Minerals Incorporated**

- 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:** Asarco Inc → Heritage Minerals Incorporated; 1950-01-01 to 1982-03-23; source msha-controller-operator-history
- **controller_controls_mine:** Asarco Inc → Heritage Minerals Incorporated; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Asarco Inc → Asarco Inc; 1950-01-01 to 1982-03-23; source msha-controller-operator-history
- **operator_operates_mine:** Humphreys Mineral Industries Inc → Heritage Minerals Incorporated; 1982-03-24 to 1986-04-28; source msha-controller-operator-history
- **controller_controls_mine:** Buttes Gas & Oil Company → Heritage Minerals Incorporated; 1982-03-24 to 1986-04-28; source msha-controller-operator-history
- **controller_controls_operator:** Buttes Gas & Oil Company → Humphreys Mineral Industries Inc; 1982-03-24 to 1986-04-28; source msha-controller-operator-history
- **operator_operates_mine:** Mineral Recovery Inc → Heritage Minerals Incorporated; 1986-04-29 to 1987-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Naguib A G → Heritage Minerals Incorporated; 1986-04-29 to 1987-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Naguib A G → Mineral Recovery Inc; 1986-04-29 to 1987-10-13; source msha-controller-operator-history
- **operator_operates_mine:** Heritage Minerals Inc → Heritage Minerals Incorporated; 1987-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Omber Richard → Heritage Minerals Incorporated; 1987-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Omber Richard → Heritage Minerals Inc; 1987-10-14 to current/open; source msha-controller-operator-history