structures. Small workshops, storage, and administrative buildings, which only peripherally touch
upon the primary industrial processes, tend to clutter a site and may be confused with the essential
image components.
NOTE:
An IA must quickly learn to distinguish the essential from the nonessential and deduce
the nonobservable from the visible in order to arrive at a set of viable image components.
3. Furthermore, there are four external recognition factors to consider when identifying industries:
a. Location of the industry.
b. Input or raw material (storage).
c. Facilities (buildings, handling and support equipment, transportation, processing
equipment, and facilities).
d. End (finished) products.
PART C: MAJOR INDUSTRIAL CATEGORIES
1. You can place all industries into one of the three major categories: extraction, processing,
and fabrication. Additionally, electric power industries are considered as processing industries,
although they are serving all industries. The following keys are to get you into the ballpark when
identifying the general industrial categories: Industry input materials key (Figure 1-1), industry
outdoor equipment key (Figure 1-2), and the bulk and waste materials identification key (Figure 1-
3).
2. You can identify industries in general from input materials by following along the "wiring
diagram" (Figure 1-1). For example, if no input materials are obvious, the line leads to an
extraction industry. If there are variable input quantities and structures, especially small buildings,
you can probably determine a fabrication industry from these indicators. In case there are large
quantities of input materials and structures, such as large complex buildings and dams, you should
identify a processing industry.
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