It's called a 43-101 disclosure and conforms to all regs and is quite proper:

As per NI-43-101, part 2.3 (2a and 2b) the author will comment on the potential of the mineralized structure at Angostura that is the target of further exploration. It must be noted that this potential quantity and grade is conceptual in nature, as such, there has been insufficient exploration to define a mineral resource. It is uncertain if further exploration will result in the targets being delineated as a mineral resource.

stateside