(By) Besides the extensive storage space, there are also offices for the Commissariat staff and a cooper's workshop to build the barrels for the supplies.
But perhaps the most unique feature of the Commissariat is its use as a treasury. Tucked away in the northeast corner of the building, we have a vault. Here, both the black powder for blasting and the workers' wages were kept secure.
(Dalhousie) How secure?
(By) Are stone walls that are three feet thick secure enough?
(By) The walls throughout the rest of the building are only two and a half feet thick, but it's still plenty of protection to withstand cannon fire.
But I cannot take all the credit for the sturdiness of the Commissariat. Thomas Mackay and his team of Scottish stonemasons built it. They quarried the limestone from the east bank of the Canal.