oe PLATE 12. ISLAND YVONNE, NORTH END, SPRING, 1956. Facilities for the LACROSSEtest were the most elaborate of all tests, although not as massive as for the MIKE test. Most of the facilities shown here were consumed by the test, but a significant volume of contaminated debris remained. The line-of-sight pipe, exiting the photo at upper right, went into Station 1310.