Portable stove for Haiti

Hello everyone! I am trying to get feedback on an idea I have for building a portable rocket mass stove in a 5 gallon bucket that I can use in Haiti. The idea is to, here in America weld a L-tube of a four-inch by 12 inch piping. Take the l-tube with me to Haiti, then once in Haiti taking 5 gallon bucket, cut out a 4"circle in the side, place the metal tube in the bucket, and fill it with sand and dirt.

The idea came from this YouTube video http://youtu.be/aOZ7gJaqdtQ In this video the man uses 5 gallon bucket and PVC pipe as a mold to create a solid concrete and vermiculite rocket mass stove. My idea is to make the burn chamber and chimney out of very solid long-lasting material, that can be transported around. Big bucket and insulation would just come from their natural surroundings. I think my idea is the opposite of what this man did.

Plastic Buckets, sand and small rocks are plentiful in Haiti. My questions are:
would sand and rock be enough insulation to protect the integrity of the structure?

Second what would be the best metal tube to use for the L-tube?

Are there any other ideas I need to consider that you can think of?

Lastly, is this a good idea or just wishful thinking?

Ken Geraci : The people of Haiti are so poor that onr % gallon bucket gets shared with 4-8 families and you want to convince them to ruin a good bucket by punching holes in it ?

Ansecond source must be found, the type of plastic used to make these buckets has a 2 yr life span in upstate N.Y., it is the amount of Ir / Uv Radiation that eventually causes the
buckets to become very brittle and fail. you must plan to work within that window, actually returning better buckets to street use !

Dry sand has a lot of tiny air pockets in it and can be very effective as insulation ! Cement is very hard to come by and at any % above 10% will start to disassemble itself due to a
high temp disintegration of the lime!

Fortunately that means you will have to use cob or adobe, as any metals will soon fail if used in a Rocket stove ! God works in many ways his manacles to perform, but he does not
make a steel to withstand any use within the Rocket stove itself !

If you can find a N.G.O. to support you in this great project, spend a little time teaching yourself how to reach 'the people' !

Do a LOT OF RESEARCH with the people at Aprovecho.com, these are great well intentioned people who have the right idea but became bogged down in dealing with corporate help
at the C.E.O./C.F.O. level and forgot about the people they were trying to serve,!

Every year they invite people to their facility to learn how to make good rocket stoves here in the States with little thought given to the organization needed to make this a working
project that can be run by native Haitians

I can only wish you the very best good lucK ! BIG AL