I would like to preface this message with the acknowledgement that I am what would be described as a "Practicle Person" and not an engineer by wrote. I have worked in the fields of construction, mining and waste water treatment and see the processes occurring in the context of a hands on perspective.

I believe as a tradesman, ironworker and millwright I can build just about anything you need intuitively. Yet I must also acknowledge that I respect with unlimited praise the ability of those whom are able to quantify and use the engineering tools to conceptually develop and idea and test the idea quantitavitely prior to production.

Pardon if you will the long winded preface. I only want to introduce the perspective I am to offer by introducing the limitations as well as the insights associated with myself, the source of the question.

Last year I worked in several capasities in a dolomite quarry running a concrete recycling plant which we also used for crushing dolomite stone.

Almost all of our "downtime" was due to plugs in the transfer boxes that material flows into either due to a change in direction of materials or elevation, both necessitating a hopper.

I studied the flow of materials and being the person who more often had to free up the plugs, I studied their compositions as well as the general nature of the materials causing the plug prior to and while freeing the hopper of these materials.

I beileve as a practicle man I've several designs that are really unique and not tried in the industry at the present. After searching the web and looking at the crusher plants others are using in daily operations, my suspicion is generally confirmed that most plants are using the same technnology and thus might be experiencing the same amount of down time in perportion to running time as we did last year.

I would like to discuss product development with interested persons or a company that might want to develop a new technological product in the context of a real problem in many plants working with unconsolidated materials with differences in sizes of materials.

I don't claim to be either a genius or professional - but I do have over 40 years experience working with machinery, metals, steel fabrication, continual process operations and industrial trades and my hand can actually make into a product what my mind, after experience can design.

Thank you

Thomas P. Gregory Jr.

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