In a previous Google Answer, researcher "pinkfreud" gave a good
overview of Silent Chemical Demolition Agents (SCDA's) used for
breaking rock. They're generally used in urban environments where high
explosives are too dangerous because of flying rock, or by amateurs
who don't have the time to get a high-explosives permit, etc.

I would like to get an estimate of the market size for this type of
product. Many of the manufacturers are listed in the previous Google
Answer here: http://answers.google.com/answers/threadview?id=354284

They include RockTek, NoneX, Fract.AG, Dexpan, etc.

This may be a tough question, but I would accept an understanding of
the total explosives market size (in dollars), plus a reasonable
estimate of the sub-set which could or would prefer the chemical
demolition agents.

Finally, if it's not possible to answer this question for the $20, I
would accept a good explanation of how I WOULD go about answering it
by purchasing specific market reports, etc.

Thank you!

I gave this a shot, but I wasn't able to turn up anything useful for
you. I've sent out several email inquiries, but the rate of response
on such things is usually dismal. I hope another Researcher will be
able to help.

pinkfreud - I really appreciate your effort. I have more questions
about SCDA's but I will try to ask something more reasonable next
time. I would certainly pay you in the future (by re-asking this
question) if you get any useful responses to your e-mails. Thanks.