At that time, the recyclables that were collected included: cardboard, newspaper, magazines, office paper, aluminum, steel cans, #1 plastics, #2 plastics, 3 colors of glass, and used oil to run the furnace.
(the recyclables; were collected; ) (the recyclables that were collected; included; T:At that time)
the recyclables the recyclables that were collected
were collected included
T:At that time