RVDO Mr. Herzfeld began a multi-faceted career in

RVDO Mr. Herzfeld began a multi-faceted career in the oil and gas industry in 1971, after his service as a Captain in the United States Marine Corps. His expertise includes field activities at depths from 500 to 18,000 feet, including pumping, flowing, waterflooding, and gas-lift production operations for both oil and gas. Mr. Herzfeld's experience also includes gas gathering and pipeline operations, gas compression and refining operations. His work with geophysical magnetic exploration has led to major hydrocarbon reserves in the U.S., Canada, and Australia. Mr. Herzfeld has been widely published in the Oil and Gas Journal, World Oil and proceedings from major seminars within the oil and gas industry. He received a BA degree from the University of Texas at Austin in 1968 and is an active member of the Society of Petroleum Engineers (SPE); American Association of Petroleum Geologists (AAPG); Geological Society of America (GSA); and, The New York Academy of Sciences (NYAS). Mr. Herzfeld is also the sole owner of Property Development Group, Inc. (PDG), a bonded oil and gas operations company; Austin Oil & Gas (AOG), a mineral & lease acquisition company; and, President/CEO of Riverdale Oil and Gas Corporation (RVDO), an OTC public company.