Objects that can contribute to caught‑in or caught‑between incidents are typically heavy, moving, or shifting items that can pinch, crush, or trap part or all of a person’s body between two surfaces.

Main types of objects

  • Heavy machinery and equipment such as forklifts, cranes, skid steers, compactors, and loaders, which can pin workers against walls, columns, vehicles, or other fixed objects.
  • Moving machine parts including gears, rollers, belts, pulleys, sprockets, rotating shafts, and augers, which can pull in hands, clothing, hair, or tools and trap them against machine frames or guards.
  • Construction materials like steel beams, concrete slabs, precast panels, pipes, lumber stacks, and large stone blocks that can shift, slide, or fall and crush someone against the ground or another object.
  • Vehicles and mobile equipment such as trucks, trailers, dump bodies, and rail cars, especially where workers get caught between a vehicle and a dock, wall, another vehicle, or a raised hydraulic bed that is lowering.
  • Collapsing structures or ground including trench or excavation cave‑ins, collapsing walls during demolition, and unstable stacked materials that can bury or squeeze workers between debris and the ground.
  • Agricultural and industrial equipment such as balers, compactors, conveyors, grain augers, and PTO‑driven attachments, which can entangle clothing or body parts and pull them into tight spaces.
  • Doors, gates, and mechanical barriers like heavy industrial doors, vertical lift gates, dock levelers, and powered security gates that can close on a person and trap them between the moving section and a fixed frame.

Quick illustration

Imagine a worker standing between a backing forklift and a concrete column: if the operator does not see them, the worker can be crushed between the forklift and the column. The same principle applies when someone reaches into an operating conveyor and their glove is caught by a roller, pulling their hand between the roller and the frame. Both situations involve a person being squeezed between a moving object and a stationary surface, which is exactly what defines a caught‑in or caught‑between incident.

Mini‑TL;DR: Any heavy, moving, or unstable object (machines, vehicles, materials, collapsing ground, or closing barriers) that can squeeze a person between two surfaces can cause a caught‑in or caught‑between incident.[1][3][5]
Information gathered from public forums or data available on the internet and portrayed here.