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PREPARED STATEMENT OF Dr. DANIEL PINDZOLA, PRINCIPAL ENGINEER, PROCESS TECH- 
NOLGY DEPARTMENT, THE FRANKLIN RESEARCH CENTER, A DIVISION OF THE FRANK- 
LIN INSTITUTE, PHILADELPHIA, PA. 
My name is Daniel Pindzola. I am a chemical engineer. For 13 years I 
have been with The Franklin Institute working mainly on waste utilization and 
disposal problems. My initial work at The Institute involved studies on 
sludge, dredge spoil, and chemical waste disposal in the ocean. Since then a 
major portion of my time has been spent developing what has turned out to be a 
practical thermal process that cheaply reduces sewage sludge and solid waste 
residues to an insoluble rock product. Prior to my joining The Franklin 
Institute, I was with the Du Pont Company for almost 7 years, where I was 
engaged in process research and development. 
With me today is Dr. Hardy Jefferson Bowen, who is a Principal Scientist 
at The Franklin Institute. He is also a chemical engineer. His Ph.D. is in 
marine biology. He has participated in the development of the ECOROCK sludge 
disposal process, which I am going to discuss today. 
Description of the ECOROCK Process 
An alternative to ocean and land disposal of sewage sludge has been 
developed over the past 10 years at The Franklin Institute under government 
sponsorship. It is simpler, cheaper, and safer than other available disposal 
methods. It requires little space for operation and uses uncomplicated, well- 
proven process equipment; an ordinary small cement kiln is the central 
equipment piece. 
