Next time your friends are super happy about finding iron, don't assume they're noobs. Maybe they just play lots of modpacks. (Modpack in the pic: FTB academy. Pure genius of a pack) :
Electric Pump (Mekanism) - Official Feed The Beast Wiki
OTDR from EXFO covers channel spacing of 100/50 GHz | Laser Focus World
PRODUCT FOCUS: OPTICAL TIME DOMAIN REFLECTOMETERS: What to know when selecting an OTDR | Laser Focus World
Cyclic - Official Feed The Beast Wiki
TIL you can use more than 4 Industrial Foregoing laser drills per base (direwolf20 1.6) : r/feedthebeast
Laser Drill - Feed The Beast Wiki
Basic ν-OTDR setup. The laser (we use the laser of the FTB-7600, P peak... | Download Scientific Diagram
Use the MFR Laser Drill (way OP in an awesome way for sure)? Always wonder what laser focus to use to get what you want? Take a look here for the answer. :
Plastic Body Cover Cap for Canon FD AE-1 program FTb A-1 manual focus cameras | eBay
Laser Drill - Feed The Beast Wiki
Laser Focus doesn't work (Crackpack 1.7.10) : r/feedthebeast