campgrounds, sanitation facilities, 
and buildings. The supportive 
personnel employed by the Forest 
Service play a very important role 
in the accomplishment of the 
mission. The following categories 
cover some of their duties and 
qualification requirements: 
Forestry Aids and Technicians 
perform various duties in one or 
more areas of forestry, including 
collecting and recording tree 
height and diameter 
measurements, recording data 
collected from rain gages, 
thinning young timber stands to 
increase productivity, maintaining 
public campgrounds, and serving 
on afirefighting crew orasa 
lookout at a fire lookout station. 
Hydrologic Aids and Technicians 
collect, select, compute, adjust, 
and process data; prepare charts 
and reports; and perform related 
duties supporting professional 
work in hydrology. 
Physical Science Aids and 
Technicians assist professional 
employees by performing duties 
such as calibrating and operating 
measuring instruments, mixing 
solutions, making chemical 
analyses, setting up and operating 
test apparatuses, and compiling 
and processing scientific data. 
Biological Aids and Technicians 
work in biological and agricultural 
laboratories and field or 
experimental areas such as 
greenhouses, growth houses, 
hatcheries, and wildlife refuges. 
They provide technical support and 
assistance to professional 
personnel engaged in scientific and 
technical work. 
Engineering Aids and 
Technicians assist in the survey, 
design, and construction of forest 
roads, trails, recreation areas, 
bridges, and buildings. Knowledge 
of transit, level, and staff compass 
techniques; survey methods and 
procedure; notekeeping; and 
safety practices is required. 
Surveying Aids and Technicians 
serve as members of crews doing 
such jobs as route survey work, 
construction staking, chaining, 
clearing lines, notekeeping, and 
other work involved in preliminary 
surveying. They may also serve as 
firefighters during periods of high 
fire danger. 
Range Aids and Technicians 
perform various tasks in 
connection with the management, 
conservation, development, 
utilization, and protection of 
forage and related range resources 
for livestock or big game. 
Trade and Craft Workers, such as 
carpenters, parachute repairers 
and packers, welders, cooks, 
bulldozer operators, and others 
experienced in specific trades and 
crafts, are employed for 
construction, maintenance, fire 
control, and other projects. 
Forest Workers/Laborers are 
assigned duties such as eliminating 
undesirable trees, pruning trees, 
building firelines, planting 
seedlings, digging ditches, and 
loading and unloading equipment 
and tools. 
Clerical Personnel are involved 
in a variety of tasks such as typing 
and filing, and telephone and 
receptionist duties. The clerical 
staff provides assistance in all 
clerical related functions in support 
of the agency mission. 
