Just as production started on location in Kentucky, it emerged that a real EPA investigation was taking place nearby. Steven Seagal invited the EPA official to visit the set so he could chat with him about environmental issues and what he did.
The box office flop of this movie caused Steven Seagal's multi-picture contract with Warner Bros. Pictures to end. However, he would work with them one last time for Exit Wounds (2001) and that movie proved to be a box office success.
Based on writer Jeb Stuart's personal experiences. He spent his college years working as a carpenter in Appalachia where, at the time, illicit poisoning of the countryside was under investigation by the EPA.
Some of the trailers for the movie show several deleted scenes, these include; In-depth view of Frank Elkins' investigation and murder (in the movie his scenes are included only in opening flashback montage), Cotton complimenting Jack and Sarah at the dance, shot of Jack in a black t-shirt turning around and pulling gun at somebody, Sarah pointing a shotgun at someone or something, gas station explosion, deleted car chase. Many other scenes were also deleted. Although it's well known that other films that Steven Seagal made with Warner Bros were also severely cut down and edited in post productions by either Seagal or studio for various reasons (Hard To Kill, Out For Justice, Glimmer Man), it's not known why was Fire Down Below edited down to the point that entire action sequences were removed or cut down, although pacing issues and studio's insistence on shorter running time are believed to be the reasons for that.
Steven Seagal plays an EPA agent who tries to stop an evil corporation from dumping toxic waste causing environmental damage in Kentucky. Seagal's previous film On Deadly Ground (1994) deals with the same thing but with a Oil Company in Alaska.
When Bruce Willis was attached as the lead, the screenplay by Jeb Staurt, was more a drama with detective elements. When Seagal came aboard after Willis departed, writer Phillip Morton was brought in to convert the material into an action film that incorporated the genre staples Seagal was famous for.