Diagram of the Mayer Ranch Passive Water Treatment System. Contaminated water enters the first cell at the upper left corner, passes through the six stages of treatment, and exits from the righthand finishing cell. This system has operated for 18 years. (photo from Bob Nairn’s MHA presentation)

(Left) Bob Nairn explains how the contaminated water enters the first cell of the treatment system.

Oxidation is more visible in the second part of the horseshoe shaped first cell.

 View of the 3^rd cell, vertical flow bioreactors.

View of the 4^th cell, regeneration ponds.

View of the 5^th cell, horizontal limestone beds.

Bob Nairn and the MHAers at the 6^th cell, polishing pond and effluent point.

The results of 17 years of operation of the Mayer Ranch wetland project. (photo from Bob Nairn’s MHA presentation)

The results of 9 years of operation of the Southeast Commerce wetland project. This project was not visited on the tour. (photo from Bob Nairn’s MHA presentation)

(Left) After a short bus ride we arrived at the Greenlawn Cemetery.  Jarod Roll (center) described the challenges of organizing labor unions in the Tri-State especially during the Great Depression.

(Above) Tony McTeer was a long-time miner in Picher and an influential member and leader of Local 15 of the International Union of Mine, Mill, and Smelter workers.  Mine Mill was affiliated with the American Federation of Labor (AFL).

THIS STOP CONCLUDED THE TOUR.