Abstract: The disclosed trellis apparatus is assemblied from a number of separate substantially identical rigid L-shaped pieces, each having short and long generally straight portions meeting across a generally right angle bend, and a loop formed adjacent the free end of each portion. The loop on the short portion is open and presents a gap wider than the cross-section of the long portion and further lies in a plane generally perpendicular to the straight portion. The free end of each long portion may be inserted direct)y into the plant dirt, at different circumferential locations radially adjacent the plant, to a depth that provides stable support thereof and that orients the short portion substantially horizontal and laterally adjacent the plant foliage.

Abstract: Improved thermal insulation for a nuclear reactor deck comprising many helical coil springs disposed in generally parallel, side-by-side laterally overlapping or interfitted relationship to one another so as to define a three-dimensional composite having both metal and voids between the metal, and enclosure means for holding the composite to the underside of the deck.