 By this time he was convinced that radiohalos might be the key to determining the age of the Earth, and might be capable of vindicating flood geology.He continued to work on the subject at home using a small microscope and attempted to publish his results (minus his creationist conclusions) in one or more peer reviewed scientific journals.In 1969, while Gentry was affiliated with an Adventist college in Maryland, Oak Ridge National Laboratory invited him to use their facilities, as a guest scientist in the hope that his work on radiohalos might lead to discovering super-heavy elements.