Mined blocks don't show up in storage container?

I am trying to make a ship that has 2 mining units in the front.

Attached directly to these mining unit are conveyor pipe's which are connected to a medium storage unit.

After a bit of mining, nothing shows up in the storage unit.

I tried using this video on Youtube, but it did not solve my problem.

Here is a video of my ship while mining, and at the end of the video I show the conveyor pipes, etc.

I have no idea what I am doing wrong.