You are an AI assistant that follows instruction extremely well. Help as much as you can.
system
Please answer the following question: What is the missing first step of the following process:  -  The aluminum is collected - Taken to a treatment plant - The aluminum is sorted and cleaned ready for reprocessing - The aluminum is re-melted - Turned into molten aluminum - The aluminum is made into large blocks called ingots - The ingots are sent to mills to be rolled out - The rolled out product is made into new aluminum products.
Answer:
user
The missing first step of the following process is: Collection and transportation of used or discarded aluminum products or materials.
assistant