The nature of the accident he could not ascertain; indeed, the railway authorities did not clearly know at that time.
So far as one can ascertain from the conflicting accounts that have been put forth, the majority of them remained busied with preparations in the Horsell pit until nine that night, hurrying on some operation that disengaged huge volumes of green smoke.
There are no more uses of "ascertain" in the book.
Show samples from other sources
A committee was formed to ascertain the level of public support for a new bike path.
The slaveholders have been known to send in spies among their slaves, to ascertain their views and feelings in regard to their condition.
Douglass, Frederick -- Narrative of the Life of Frederick Douglass An American Slave