Research in action (Penny Boston and Diana Northup) 2003-09-03

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Diana Northup (seated in stream) and Penny Boston do ORP measurements in divided stream in Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.	Diana Northup (seated in stream) and Penny Boston do ORP measurements in divided stream in Sala Grande, Cueva de las Sardinas, Tabasco, Mexico. (Diana's favorite of this series.)


Diana Northup (seated in stream) and Penny Boston do ORP measurements in divided stream in Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.	Diana Northup and Penny Boston do ORP measurements across from Sulphur Spring, on the red side of the divided stream in Sala Grande, Cueva de las Sardinas, Tabasco, Mexico. Upper-body views.


Diana's hand inserting the ORP probe into gypsum paste, about 1.5 meters above the stream, across from Sulphur Spring, on the red side of the divided stream in Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.	Diana Northup and Penny Boston do ORP measurements in Sulphur Spring, in Sala Grande, Cueva de las Sardinas, Tabasco, Mexico. Published as part of the cover of the National Cave and Karst Research Institute 2003 annual report. The same photo was also on page 22.


Diana Northup and Penny Boston do ORP measurements in Sulphur Spring, in Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.	Diana and Penny Boston observing sulfur formation from a hydrogen sulfide spring and snottites near the Chiribltil Passage near the entrance to Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.


Diana and Penny Boston observing sulfur formation from a hydrogen sulfide spring and snottites near the Chiribltil Passage near the entrance to Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.	Diana and Penny Boston samples sulfur from a hydrogen sulfide spring near the Chiribltil Passage near the entrance to Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.


Diana and Penny Boston samples sulfur from a hydrogen sulfide spring near the Chiribltil Passage near the entrance to Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.	Diana and Penny Boston samples sulfur from a hydrogen sulfide spring near the Chiribltil Passage near the entrance to Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.


Diana and Penny Boston samples sulfur from a hydrogen sulfide spring near the Chiribltil Passage near the entrance to Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.	Penny Boston (on left) and Diana Northup discuss the implications of the biovermiculations in the passage parallel to Ragu, Cueva de las Sardinas, Tabasco, Mexico.


Penny Boston (on left) and Diana Northup discuss the implications of the biovermiculations in the passage parallel to Ragu, Cueva de las Sardinas, Tabasco, Mexico.	Penny Boston (on left) and Diana Northup discuss the implications of the biovermiculations in the passage parallel to Ragu, Cueva de las Sardinas, Tabasco, Mexico.


Penny Boston (on left) and Diana Northup discuss the implications of the biovermiculations in the passage parallel to Ragu, Cueva de las Sardinas, Tabasco, Mexico.	Penny Boston views the biovermiculations in the passage parallel to Ragu, Cueva de las Sardinas, Tabasco, Mexico.


Penny Boston views the biovermiculations in the passage parallel to Ragu, Cueva de las Sardinas, Tabasco, Mexico. She's has too much cave gas today!	Diana Northup views the biovermiculations in the passage parallel to Ragu, Cueva de las Sardinas, Tabasco, Mexico. She's has too much cave gas today!


Diana Northup views the biovermiculations in the passage parallel to Ragu, Cueva de las Sardinas, Tabasco, Mexico. She's has too much cave gas today!	Penny Boston (seated in stream) and Diana do ORP measurements in divided stream in Sala Grande, Cueva de las Sardinas, Tabasco, Mexico.