The sm142_pack.zip file you have requested: Maps Levels Missions / Map Packs / Speedmapping Packs / SM142: Netherworld Assembly Line - 929.28kb is not available. Perhaps try browsing all files for the game Quake and upload any files you want to share or are missing. This is the only information we could locate:
Here is speedmapping pack 142. 90 minute time limit speedmapping session themed "Netherworld Assembly Line". 7 maps by bambuz, negke, spd, Spirit and Zwiffle.