First time today I spun this one. Wow, this is quite impressive, especially for the time!
I mean, this is incredibly diverse, sometimes punky fast, sometimes doomy slow. It is dark, the vocals gutty, and it is very melodic for this genre.
I can imagine this has been quite influential.
Not everything is gold here if you ask me but I am enjoying this over a large part. And no thrash fan should miss this out.