contributor

• Arocha-Ordonez, Marco A.   Laboratory Manager   1979 - 1980
• Arocha-Ordonez, Marco A.   Plant Manager   1982 - 1985
• Arocha-Ordonez, Marco A.   Process Engineer   1980 - 1982
• Arocha-Ordonez, Marco A.   Quality Control Technician   1977 - 1978