# Relationship history for MSHA mine 3301195

Current hierarchy: **John E  Ling → L & M Mineral Company → Holmes Clay Division**

- 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:** Holmes Limestone Company → Holmes Clay Division; 1950-01-01 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** E E Mullet Family  et al → Holmes Clay Division; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** E E Mullet Family  et al → Holmes Limestone Company; 1950-01-01 to 2003-03-31; source msha-controller-operator-history
- **operator_operates_mine:** L & M Mineral Company → Holmes Clay Division; 2003-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John E  Ling → Holmes Clay Division; 2003-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John E  Ling → L & M Mineral Company; 2003-04-01 to current/open; source msha-controller-operator-history