WOODS CROSS, Utah -- City leaders will meet with the public to talk about last week's Silver Eagle refinery explosion that rocked a neighborhood, forced four families out of their homes and damaged possibly 120 houses.

A six member team from the US Chemical Safety Board (CSB) was deployed to the accident site.

The CSB's Donald Holmstrom said investigators don't know why the pipe suffered what he called a "catastrophic" failure.

Until the source of the failure is known, there is always the danger that more failures could occur.

It is critical to understand what happened and to be able to check out the existing plant piping.