- Prelimimary Lumber Recovery for Dead and Live Engelmann Spruce
The dead sample includes standing and down trees killed by the Engelmann spruce beetle (Dendroctonus ruffipennis Kirby) over 20 years ago.
- \V3R4P1
Until recent years the use of Engelmann spruce for papermaking has been mostly in one mill at Spokane, Wash, Remoteness of markets and the unfavorable transportation position in general to the Rocky Mountain area have acted as the major deterrenlE to.
- L. W. WOOD, Engineer and J. O. BLEW, Technologist Forest Products
Decay problems in mine timbers are, reduced by early removal of the bark and by open piling of timbers to afford as much air seasoning as possible before they are placed in the mine, Preservative Treatment Engelmann spruce is a wood of rather low decay.
- Strontium isotopes reveal distant sources of architectural timber
Because strontium from local dust, water, and underlying bedrock is incorporated by trees, specific logging sites can be identified by comparing 87Sry86Sr ratios in construction beams from different ruins and building periods to ratios in living trees.
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