Can't seem to find any explosions

[xThaWolfx]

I'm currently working on something that requires finding any explosions near me.
I have failed using both ents.FindInBox so I can see if there is anything explosive near me:

local e = ents.FindInBox(LocalPlayer():GetPos() + Vector(-150,-150,-150),LocalPlayer():GetPos() + Vector(150,150,150))

for k,v in pairs(e) do
	LocalPlayer():ChatPrint(v:GetClass())
end

And ents.FindByClass("env_explosion"):

local explosives = ents.FindByClass("env_explosion")

for k,v in pairs(explosives) do
	print("Found")
end	

Both methods have failed, so here I am..
Any help will be greatly appreciated.