YOKE DAY First Picture. of tus Atomic Sioud., It First itctures of the xtomio Cloud, fs fervunnte thot the atemie cl ud was Silhouettes ecerest tee Shout of dewy wil Gut teese remit le pictures were obthived. Note that tue cumudis-1ike clout wilen formed at the bese of the Notw the dusty, smoky appearence of the atowte cloud, The iiaueter of vhe upper part is roughly six miles, Im this Pextuvrapb the anvil-lice top of this cloud may be geen, The sureading out ~ atomic cloud can ve seen at the extreme left. of thia epvil fe thourht to have indicuted the arrivel of the top of the atomic cloud at the atratospherie inversion, H-hr. plus 15 min.