Searching For Oil On The Isle Of Wight. Inside the mobile laboratory the results of the subterranean explosion are recorded on light-sensitive paper (seen coming out of the electronic recorder). The paper is then ready to be developed, and Will picture, in the for of a graph, the construction of the strata hundreds of feet below the grounds. This will enable the experts to construct their strata contour map of that area. March 9, 1950.