I volunteered at a music festival once that had a large recycling program. We piled all the trash into large piles but weren't given instructions on what to do

I volunteered at a music festival once that had a large recycling program. We piled all the trash into large piles but weren't given instructions on what to do with the recycling. In the end, time was tight. They told us to mix it all together, and their tractors that hauled it were also putting it all in the same place, to dump in a landfill.