# Relationship history for MSHA mine 4003048

Current hierarchy: **James T  Tinin → Rocky Point Rock, Inc. → Mine #3**

- 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:** Workman Materials Inc. → Mine #3; 1991-10-01 to 2011-10-12; source msha-controller-operator-history
- **controller_controls_mine:** B Wayne  Workman → Mine #3; 1991-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** B Wayne  Workman → Workman Materials Inc.; 1991-10-01 to 2011-10-12; source msha-controller-operator-history
- **controller_controls_mine:** James T  Tinin → Mine #3; 2004-04-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rocky Point Rock, Inc. → Mine #3; 2011-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James T  Tinin → Rocky Point Rock, Inc.; 2011-10-13 to current/open; source msha-controller-operator-history