| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
work science (work studies) harvesting of wood felling and related operations felling and subsequent primary conversion felling with machine saws |
| Location: | Alaska |
| Description: | Cutting spring board notch. |
| Date: | 1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
work science (work studies) harvesting of wood felling and related operations felling and subsequent primary conversion felling with machine saws |
| Location: | Alaska |
| Description: | Under cut. |
| Date: | 1957 |