Dumping/retrieval storage areas on tracks with conveyor inputs and outputs.

Storage area of large volumes of loose materials such as coal, ores, sand, etc.
See links for relevant images:
https://cdn.discordapp.com/attachments/888851931559260162/899065719491272704/image0.jpg
https://cdn.discordapp.com/attachments/888851931559260162/900384519645954108/16347387824966948454480843798114.jpg

Would love to see this in the game as don't want to make massive piles of ores everywhere and the current storage is to expensive need a decent solution for storing 200k + ores and rock and dirt, would also help performance not to have piles of stuff everywhere, that way you can keep you excavators mining instead of sitting around and gives you a decent backup, when moving over to different ore patches.
Ideally single units that can be placed where you are mining.