# Relationship history for MSHA mine 4403848

Current hierarchy: **Skeens Dewey & Robert Pugh → Mc Cloud Coal Company → No 4 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:** Chaney Cecil → No 4 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Skeens Dewey & Robert Pugh → No 4 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Marathon Coal Company → No 4 Mine; 1974-01-01 to 1974-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Marathon Coal Company → No 4 Mine; 1974-01-01 to 1974-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Marathon Coal Company → Marathon Coal Company; 1974-01-01 to 1974-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Joy Lynn Coal Company → No 4 Mine; 1974-12-01 to 1975-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Deel Carmel & Odell Et Al → No 4 Mine; 1974-12-01 to 1975-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Deel Carmel & Odell Et Al → Joy Lynn Coal Company; 1974-12-01 to 1975-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Little Hackney Creek Coal Company → No 4 Mine; 1975-08-01 to 1975-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Chaney Cecil → Little Hackney Creek Coal Company; 1975-08-01 to 1975-10-16; source msha-controller-operator-history
- **operator_operates_mine:** Mc Cloud Coal Company → No 4 Mine; 1975-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Skeens Dewey & Robert Pugh → Mc Cloud Coal Company; 1975-10-17 to current/open; source msha-controller-operator-history