similarities and differences between confined spaces and permit-required confined spaces

Summarize the similarities and differences between confined spaces and permit-required confined spaces, and give at least three examples of each. Summarize the duties of personnel involved in the performance of a permit-required confined-space entry.

Your response must be at least 200 words in length.  All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations.