It looks more like those are heavy duty military grade storage containers that contain the binary components. When it's time to use the weapon, it would be removed from the container(s) and loaded into appropriate missiles or bombs. Chemical weapons are so dangerous that you would need extremely durable containers for them such as these. Here's another picture of them that gives a better idea of what they are:
Those appear to be Russian PMK gas masks and that appears to be Russian language on the containers and the walls btw.