Which of the following outcomes are due to caught in-between types of accidents?

Caught-in-between accidents generally occur in situations where a worker is caught, trapped, or crushed between two objects or moving machinery. Among the choices provided, the outcomes that fit this description are related to scenarios where a worker could be pressed between operating equipment or buried under material due to a collapse.

Choosing both instances where a worker could be caught or crushed by equipment and where they are at risk of being trapped in a trench or excavation collapse accurately represents the nature of caught-in-between accidents. This is because in both described scenarios—operating equipment and trench collapses—there is a clear risk of being trapped or crushed under significant weight or pressure.

The other choices involve different types of hazards, such as fire or issues related to improper machine guarding, which do not specifically fall under the category of being caught in between two objects. Thus, selecting the scenarios involving crushed by equipment and trench collapse successfully identifies the correct types of accidents relevant to the question.