Abstract: A fork extension attachment for a boom-type forklift for use in loading and unloading a fragile cargo from commercial containers includes an extension portion pivotally connected to the outer end of the boom to allow pivotal movement of the extension in a vertical plane and a fork assembly having its inner end pivotally connected to the outer end of the extension portion to allow pivotal movement of the fork assembly in a vertical plane. The fork assembly includes at least two tines that are mounted for powered horizontal lateral movement relative to each other and relative to the longitudinal axis of the assembly. An electrical pendulum switch is provided for maintaining the fork assembly in a substantially horizontal position when desired.