[@Sikako J]

[i]It couldn't have been more obvious. One of the ground level containers had a manhole sized opening in the side. The metal looked as if it had been gouged through and then peeled or pushed outwards, into a metal flower. An odor, coppery and sweetly nauseating, seemed to pulse out from the hole like warmth from a gaping wound. 

All around the base of the container's exterior, coal lay strewn about in great heaping piles. Probably had been carelessly removed.
One more oddity. The coal and the crude opening glistened with a filmy thick substance, which would stick fast to Scouti if she touched it like some sort of military grade super glue.[/i]