The VG Resource

Using GCFscape, I've been looking inside the wad files for Half Life 1, but I cannot for the life of me find where the explosion effects are located. 

Valve games, especially older ones, don't seem to be commonly ripped online, so I've been running around in circles for a while now it feels like. Anyone maybe familiar with ripping from the Goldsrc engine know where these would be located? I'm thinking it might not even be in the wad files at this point.

The effects are all located in the game's "Half-Life\valve\sprites" folder path, they're all in *.spr format. You can use yuraj11's tool here to view and extract those:
https://github.com/yuraj11/HL-Texture-Tools