# Relationship history for MSHA mine 4503338

Current hierarchy: **William  Kombol → Palmer Coking Coal Company LLP → MORGAN KAME TERRACE**

- 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:** Palmer Coking Coal Company LLP → MORGAN KAME TERRACE; 1995-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William  Kombol et al → MORGAN KAME TERRACE; 1995-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Kombol et al → Palmer Coking Coal Company LLP; 1995-06-01 to current/open; source msha-controller-operator-history