Seo ne

production, and, in the future, it may be necessary for small and medium
sized mills to practise integrated utilization in the form of co-operative
efforts.

The term, sawmill residue, as used in this report may be defined
as "that materiel which has no present value for the ordinary or main
purpose of manufacture”, or, in other words, "that portion of the log not
converted into lumber",

This is a report of a study undertaken by the Vancouver Forest
Products Laboratory to obtain information regarding the character of saw-
mill residue by measurement and observation of the form, quantity, quality,
and distribution of such material; and to investigate ways and means of
utilizing it to better advantage.

This study was made in the Prince George area of British Columbia
at twelve mills cutting spruce 1), These included five mills cutting more
than 20 M ft.b.m. per 8-hour shift, and seven mills cutting under 20 M
ft.bem. per 8-hour shift,

Il. OUTLINE OF SURVEY
le Objects of the Study

The Laboratory has been accumulating information on the utiliza-
tion of sawmill residue. Surveys have been conducted in the main lumber-
producing areas of the province at selected mills, and the quality and
quantity of wood residue have been determined.

The specific objectives of this survey were:

1. To obtain data in respect to the amount and size of solid
sawmill residue (slabs, edgings and trimmings) which result
from present methods of manufacturing lumber in the region
of Prince George.

2. To determine the percentage of the log converted into sawdust
at each stage of manufacture.

3. To compare utilization methods in different sizes of sawmills.

4. To note the present use of sawmill residue.

eee

(1)western white spruce (Picea glauca (Moench) Voss var. albertiana
(S. Brown) Sarg.), Engelmann spruce (Picea Engelmanni Parry), and
white spruce (Picea glauca (Moench) Voss) are all found in this area.