4-9 Trolley at West End, 150 Ton Load, Hook Up, Modes 8-11 4-30 4-10 Trolley at Quarter Span, 150 Ton Load, Hook Up, Modes 4-7 4-31 4-11 Trolley at Quarter Span, 150 Ton Load, Hook Up, Modes 8-11 4-32 4-12 Trolley at Mid Span, 150 Ton Load, Hook Up, Modes 4-7 4-33 4-13 Trolley at Mid Span, 150 Ton Load, Hook Up, Modes 8-11 4-34