Document mB9dyBq5bK2mMb9NBybrydpq0

MOTORIZED EQUIPMENT and by a blasting procedure that forces the rock out from the face sufficiently to reduce the height of the pile. The shovel operator is thus able to maintain the bank at a safe slope When loading from under a high face, the operator should swing the shovel to the sight side and away from the face, thereby allowing himself a better view and reducing his exposure to injury. Undercutting banks of earth, sand, grav el, and similar materials is especially dan gerous during winter and spring months Freezing and thawing may result in a col lapse of the overhanging material To maintain a safe slope, the overhanging ma terial may be blasted The operator has responsibility for the safety of other men whose duties take them into the vicinity of the shovel These work ers may be struck by falling rock, squeezed between the shovel and the bank or similar pinch pouts, or struck by the dipper. No worker should enter a dangerous location without first notifying the operator who, in turn, should not move the equipment Dippers should be filled to capacity but not overflowing, to prevent falling material from endangering workers and to eliminate excessive spillage. Insofar as possible, load ing should not be done from the blind side The operator should not swing a load over an engine nor load a truck until the driver has dismounted and is m the clear unless the truck is provided with a canopy for the protection of the driver Cars and trucks should be loaded evenly so that earth or rocks do not overhang the sides Housekeeping on and around the shovel should be first-class The operator should keep tools in a definite place and keep the floor free of grease and oil Ice and snow should be removed promptly, and a bull dozer should keep the area around the shovel free of rocks and ruts No one should be allowed on the shovel or dragline unless authorized A person should get on or off only after he has noti fied the operator, who should swing the platform so that die man can get on or off the front by grasping the handhold and stepping up or down on the tread No one should get on or off by jumping onto the tread, either while the operator is making a swing or while the equipment is sta tionary. Mobile crones The outstanding charac teristic of accidents involving crawler and similar types of cranes is die seventy of the wJunes Although these accidents oc cur with relative infrequency, the mjunes are about twice as senous as those result ing from accidents involving other tyjpes of heavy equipment. For this reason, a crane operator particularly should be se lected for his intelligence, stability, and willingness to follow instructions. The operator is largely responsible for the safe condition of the crane and should make regular inspections of brakes, cables and their fastenings, and other vital parts, and prompdy report worn, broken, and oth er defective parts Like other equipment, mobile cranes should be maintained on a regular schedule The operator is responsible for the safety of the oder and also has a large measure of responsibility for preventing mjunes to hookers or nggers and others working around the equipment. However, anyone working in the vicinity of a crane has the responsibility to stay dear of die boom. In no case should anyone work or cross under the boom Some of the worst accidents are the re sult of overloading cranes. In no case should the load limits specified for various positions of the boom by the manufacturer be exceeded These load limits should be conspicuously posted in the crane cab If there is douot about the weight of a load, the capadty of the crane to handle the load safely should he tested by first lifting the load slightly off the ground Operating a crane on soft or sloping ground is dangerous The crane should al ways be level before it is put into opera tion Outriggers give reliable stability only when used on solid ground The use of makeshift methods to increase the capacity of a crane, such as timbers with blocking, is too dangerous to be permitted Boom stops limit the travel of the boom beyond an angle of 80 degrees above the horizontal plane and prevent the boom from being pulled backwards over the top of the machine by the boom hoisting mecha nism or the sudden release of a heavy load suspended at a short radius. Either of these occurrences usually results in serious dam age to the equipment and injuries to the 44-24