# Relationship history for MSHA mine 4605412

Current hierarchy: **Jetter Ben & Edgar Cruey → Daniels Creek Coal Corp → #2 Surface 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Mc Namee Charles R--Jack Robertson & Leonard Hovis → #2 Surface Mine; 1976-09-17 to 1979-06-28; source msha-controller-operator-history
- **operator_operates_mine:** Mc Namee-Cheyenne → #2 Surface Mine; 1977-01-01 to 1979-06-28; source msha-controller-operator-history
- **controller_controls_operator:** Mc Namee Charles R--Jack Robertson & Leonard Hovis → Mc Namee-Cheyenne; 1977-01-01 to 1979-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Continental Resources & Mineral Corp → #2 Surface Mine; 1978-12-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cheyenne Mining Company → #2 Surface Mine; 1979-06-29 to 1985-03-21; source msha-controller-operator-history
- **controller_controls_operator:** Continental Resources & Mineral Corp → Cheyenne Mining Company; 1979-06-29 to 1985-03-21; source msha-controller-operator-history
- **operator_operates_mine:** Daniels Creek Coal Corp → #2 Surface Mine; 1985-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jetter Ben & Edgar Cruey → #2 Surface Mine; 1985-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jetter Ben & Edgar Cruey → Daniels Creek Coal Corp; 1985-03-22 to current/open; source msha-controller-operator-history