I don't know if the particular incidents to which the member is referring are incidents or accidents, because we define occurrences as one or the other.
As I said, we have, from the stats, almost 1,200 occurrence reports per year. We can't and don't investigate all of them. We have a policy on occurrence classification, which determines what level of investigation we will do for each one.
The year 2019 was particularly busy, and we have the highest number of major rail investigations under way. We don't control our workload. We have finite resources, so when we have a large number of occurrences that we want to investigate, we need to spread ourselves across those, and that sometimes affects the time required. I can tell you that we are pushing these through and we expect to release those for which we are doing full investigations in the coming days, weeks and months.
I would also add that for all of those occurrences, whether or not we complete a full investigation with a public report, we assess every one. We record the data and we use that for statistical analysis and to inform future investigations.