In 1994, shan qandaraasleyaal rayid ah oo aan la magacaabin iyo carmallada qandaraasleyaasha Walter Kasza iyo Robert Frost ayaa dacweeyay USAF iyo Hay'adda Ilaalinta Deegaanka ee Mareykanka. Dacwadooda, oo ay matalayeen borofisar ku takhasusay sharciga Jaamacadda George Washington Jonathan Turley, waxay ku andacoodeen inay goobjoog ka ahaayeen markii tiro badan oo kiimikooyin aan la aqoon ah lagu gubay godad furan iyo qodobo ku yaal Groom. Biopsies laga soo qaatay cabashooyinka waxaa falanqeeyay biochemists-ka Jaamacadda Rutgers, kuwaas oo helay heerar sare oo ah dioxin, dibenzofuran, iyo trichloroethylene dufankooda. Cabashooyinku waxay sheegeen inay la kulmeen dhaawacyo maqaarka, beerka, iyo neef-mareenka ah shaqadooda awgeed ee Groom, taasina ay gacan ka geysatay dhimashada Kasza iyo Frost.
Ciidamada Cirka ee Maraykanka ayaa si sharci darro ah ula macaamilayay walxaha sunta ah, iyo in EPA ay ku guuldareysatay waajibaadkeeda ah in ay dhaqan geliso Sharciga Ilaalinta Kheyraadka iyo Soo Celinta (oo xukuma maareynta walxaha halista ah)