The 4 main causes of injuries when using forklifts are :
a) overturns
As it may cause death also.
b) collisions with other forklifts
When it collides with other forklifts it may cause severe accidents.
c) striking pedestrians
When struck by lift or other forklifts.
d) being crushed by a forklift
When crushed it will damage other forklifts also leading to harsh injuries.
An injury is damage to body parts caused by an accident and may also be caused by several falls, hits, weapons, and more.
Hence concluded that the main causes of injuries when using forklifts are overturned, collisions with other forklifts, striking pedestrians, being crushed by a forklift.
To know more about causes of injuries refer to the link :
https://brainly.com/question/17583177