Start on the tall chimney, to the East of the collectible. Glide towards the small opening shown in the screenshot. You need to land on the ledge that is inaccessible in any other way and use the explosive gel to gain access to the location where there is the Datapack.
After you have reached the box, spread the explosive gel over the inactive button on the left of the box. Find now the pressure plate, walk onto it and explode the gel (the screenshot).
Remain on the plate and select the Remote Controlled Batarang from the inventory. Throw it towards the button on the right, which has just gone one, and maneuver it in such a way, so as to get past the fence. You can now collect the Datapack.
Datapack 7 (The Steel Mill)
You can find this collectible in the first area of the Steel Mill, i.e. in the Loading Bay. Look up and locate the Datapack, which you can grab using the claw.
Datapack 8 (The Steel Mill)
You can find this collectible in the Steel Mill, in the Sionis' Office locate d above the Loading Bay (the mill's first area). After you reach the office, examine its North-Western part to find the weakened wall fragment shown in the above screenshot. Use the explosive gel, to reveal the secret room with the Datapack in it.
Datapack 9 (The Steel Mill)
This collectible can be found in the Steel Mill, in the area between the Loading Bay and the Loading Bay Depot. Take a look around to locate the weakened fragment of the wall, shown in the screenshot, and use the detective vision if necessary. Use the explosive gel, which will reveal the secret room with the Datapack in it.
Datapack 10 (The Steel Mill)
You can find this collectible in the Steel Mill, in the Southern part of the Warehouse. Take one of the narrow passages to make it over to the area under the main balcony, where you will find the Datapack on the ground.
For finding all 10 Datapacks, you receive the audio file connected with Anarky.