Increasingly, managers in HD are management specialists with little or no field experience. If so, they usually delegate responsibility for training and operational needs to another person, often an "Ops Manager". The manager or Ops Manager will be in charge of all training and/or refresher training, so they should read the training suggestions for deminers, paramedics and field supervisors as well as those given here.
Because the accident database is a collection of reports covering events when things did not go as planned, the examples drawn from it are usually "negative" - what not to do, rather than what to do. They can be useful to explain the need for rules. Parts of the reports may be used in lectures or presentations or they can be distributed for critical discussion.
The links below only take you to a few examples. There are many others among the database records.