# Relationship history for MSHA mine 1515033

Current hierarchy: **Morris Vernon → Gideon Coal Company → Gideon Mine #2**

- 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

- **controller_controls_mine:** Morris Carl Gene Et Al → Gideon Mine #2; 1977-03-01 to 1992-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Morris Vernon Et Al → Gideon Mine #2; 1983-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Calvery Coal Company → Gideon Mine #2; 1985-01-01 to 1985-11-25; source msha-controller-operator-history
- **controller_controls_operator:** Morris Carl Gene Et Al → Calvery Coal Company; 1985-01-01 to 1985-11-25; source msha-controller-operator-history
- **operator_operates_mine:** Micah Coal Company → Gideon Mine #2; 1985-11-26 to 1986-02-20; source msha-controller-operator-history
- **controller_controls_mine:** Hudson Ralph Et Al → Gideon Mine #2; 1985-11-26 to 1986-02-20; source msha-controller-operator-history
- **controller_controls_operator:** Hudson Ralph Et Al → Micah Coal Company; 1985-11-26 to 1986-02-20; source msha-controller-operator-history
- **operator_operates_mine:** Jonah Coal Company → Gideon Mine #2; 1986-02-21 to 1990-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Mills Wesley N Et Al → Gideon Mine #2; 1986-02-21 to 1990-09-25; source msha-controller-operator-history
- **controller_controls_operator:** Mills Wesley N Et Al → Jonah Coal Company; 1986-02-21 to 1990-09-25; source msha-controller-operator-history
- **operator_operates_mine:** Gideon Coal Company → Gideon Mine #2; 1990-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Morris Vernon Et Al → Gideon Coal Company; 1990-09-26 to current/open; source msha-controller-operator-history