# Relationship history for MSHA mine 4603401

Current hierarchy: **Raymond  Cline → C N & B Coal Company → No D-424 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

- **operator_operates_mine:** H M Mc Glothlin Coal Company Inc → No D-424 Mine; 1950-01-01 to 1974-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Mc Glothlin Henry M → No D-424 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Glothlin Henry M → H M Mc Glothlin Coal Company Inc; 1950-01-01 to 1974-02-28; source msha-controller-operator-history
- **operator_operates_mine:** C N & B Coal Company → No D-424 Mine; 1974-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Raymond  Cline → No D-424 Mine; 1974-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raymond  Cline → C N & B Coal Company; 1974-03-01 to current/open; source msha-controller-operator-history