Then they try to educate and convert the lumbermen and manufacturers away from such practices.
The laboratory experts have already performed more than 500,000 tests with 149 different kinds of native woods.

As a result of these experiments, these woods are now being used to better advantage with less waste in the building and manufacturing industries.

A potential saving of at least 20 per cent.

of the timbers used for building purposes is promised, which means a salvage of about $40,000,000 annually as a result of strength tests of southern yellow pine and Douglas fir.

Additional tests have shown that the red heartwood of hickory is just as strong and serviceable as the white sap wood.