The collectible is on the topmost, seemingly inaccessible, balcony of the comms tower in the Industrial District. It is quite difficult to reach this collectible. Search out the tall chimney located North-West of the tower and use the hook launcher (the screenshot), pull yourself towards the chimney at high speed, which will result in the Batman being catapulted.
Quickly, turn by, around, 180 degrees and start the series of diving and increasing the altitude. This is aimed at maintaining the altitude of flight, because this is the only way to reach the balcony shown in the screenshot, with the Datapack on it.
Find a very narrow alley with four pressure plates. Around, there also is a generator and you can charge it temporarily, using the Shock Gloves. Quickly, run over the plates now, before the generator goes offline. Finally, slide to get into the location with the Datapack.
Datapack 7 (The Steel Mill)
You can find this collectible in the Steel Mill, in the Sewers neighboring the Warehouse. Explore the South-Eastern corner of the warehouse to find the locked door shown in the above screenshot. Select the cryptographic sequencer from the inventory and use it on the control panel to determine the correct password (COMPOUND) from among a number of available combination.
You may now jump down through the manhole to reach a small fragment of the Sewers. Use the glue grenades here to insulate all of the pipes that hot steam is escaping from. Then, approach the Datapack on the ground.
Datapack 8 (The Steel Mill)
You can find this collectible in the Steel Mill, in the Warehouse. Explore the North-Western part of the warehouse and use the grapple in the spot shown above, to extend the rope.
Use the hook to grapple the rope and zip down the line, while ramming into the weakened part of the wall, along your way. You can now collect the Datapack.
Datapack 9 (The Steel Mill)
You can find this collectible in the Steel Mill, in the Concealed Room neighboring the Warehouse. The collectible is behind the big grate (the screenshot).
Select the Remote Controlled Batarang from the inventory and throw it towards the opening shown in the screenshot. After the batarangs gets through the opening, turn it back and direct towards the fuse box. Note that the grate raised a bit so, slide underneath. This will allow you to reach the Datapack.
Datapack 10 (The Steel Mill)
You can find this collectible in the Steel Mill, in the Drug Lab located in the building's basement. Explore the eastern part of the lab to find the generator which you can charge with the Shock Gloves. Note that setting the generator into motion started the nearby conveyor belt. Use the claw to grab the Datapack shown in the screenshot.
For finding all 10 Datapacks, you receive the audio file connected with Branden.