at the Site 19 warehouse
It would be Site-19. Also, that seems like a weird sort of location, just some warehouse.
. is to
Missing caps. Also, is it placed in the case, or is it supposed to be kept in it? You're describing how it's stored, not how to go about putting it in storage.
thick (padded) metal
Why is that in parenthesis?
Transport should be slow and careful due to SCP-2608 being fragile
This phrasing strikes me as odd.
dropped it should not be opened to check its integrity
This bolding doesn't seem needed.
supervision by Dr.████ Bower
Why that guy?
When the case is opened it must be opened looking away from the case to avoid exposure
Pretty sure this is wrong grammatically. Shouldn't it refer to the person opening it, rather than the case itself?
manufactured around the mid 19th century.
Around isn't great, for what is already a range.
SCP-2608 has an ability to cause humans
This phrasing is off-tone.
SCP-2608 is expected to be sentient due to a recent chain
Espectation is for anticipation.
attempted breacher
This phrasing isn't great.
The interview log is feels pretty unrealistic. Very sort of just telling the reader about its other secret effect, type of thing.
