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Also Known As: Runnymeade Playhouse, Old Schoolhouse, Units I, III and IV
State: Ohio
Location: Dayton and Oakwood
Time Period: DOE 1943-1950
Facility Type: Department of Energy

Facility Description: In 1943, the Manhattan Engineer District (MED) began the Dayton Project to investigate the chemistry and metallurgy of polonium. Because Monsanto Chemical Company was already working with polonium, it was chosen as contractor for the project.

In 1943, the MED-contracted work was performed at Monsanto’s Nicholas Road location (Unit I). As the project expanded, it moved into an old building belonging to the Dayton school district at 1601 West First Street, and by October 1944 all operations had been transferred to this location from Unit I. This site became known as Unit III. In early 1944 it became apparent that the space at Unit III was also inadequate, so the U.S. Army Corps of Engineers used a judicial proceeding to obtain ownership of a building known as the former Runnymeade Playhouse in Oakwood and turned it over to Monsanto for its use on the Dayton Project. Monsanto operated a laboratory at this second location and referred to it as Unit IV. When project needs again increased beyond the combined capacity of Units III and IV, preparations were made to move the entire operation to the present-day Mound facility in Miamisburg, Ohio. Processing began at Mound in February 1949. By the end of 1950, after either decontamination or demolition, the AEC released its ownership interest in the properties back to the original owners.

Throughout the time period for this facility from 1943 through 1950, the potential for beryllium exposure existed at this site.

Contractors: Monsanto Chemical Company (1943-1950); R.G. Mattern

(1950).

Listing:
The Dayton Project is listed as a Department of Energy (DOE) site under the EEOICPA.

The Dayton Project Workers:
If you or your parent worked at this or any other DOE or AWE facility and became ill, you may be entitled to compensation of up to $400K plus medical benefits from the US Department of Labor. Call EEOICPA Counsel Hugh Stephens at 1-855-EEOICPA (336-4272) or fill out the form to the right, even if your claim has been accepted or denied.

We can help with all OWCP (Federal Workers Compensation) claims, impairments, wage loss and health care. 2495 Main Street, Suite 442, Buffalo, NY 14214.

*DISCUSSION:
The FUSRAP Combined Preliminary Assessment Site Inspection Report Unit 1, states that
The Dayton Unit I site was used for project organization and personnel development.
Polonium-210 research and development, or other materials processing was not conducted at
Dayton Unit I.

The FUSRAP Combined Preliminary Assessment Site Inspection Report Warehouse states
that the Warehouse operations were transferred to the Mound Laboratory in Miamisburg,
Ohio in1948/1949. The Warehouse facility was then decontaminated and returned to the
building’s manager for rental to other clients.

The FUSRAP Preliminary Assessment Site Inspection Report Unit III stated that following
decontamination efforts supported by the Atomic Energy Commission in 1948 through 1950,
the site was released for unrestricted use.

The FUSRAP Preliminary Assessment Site Inspection Report Unit IV stated that in 1948, all
federal activity at Runnymede Playhouse ceased and was subsequently decontaminated by
AEC in 1950.

The FUSRAP Combined Preliminary Assessment Site Inspection Report Warehouse states
that the Warehouse operations were transferred to the Mound Laboratory in Miamisburg,
Ohio in1948/1949. The Warehouse facility was then decontaminated and returned to the
building’s manager for rental to other clients.

Based on these documents it appears that all residual contamination was removed by 1950.
*Source