3d Measure very heavy metal ring (7) E---R-N
This looks like ENVIRON (ring) and it contains IRON + V (ery), but I can't parse the rest of the clue.
Many thanks...
9a. Around Nevada join rally (10)
-O---L-S--
This looks like CONVALESCE, which means to rally and N for Nevada, but I can't parse the rest of the clue.
Many thanks...
1a find out about ball after throw that shouldn't happen (6,6)
-E---N ------
This looks like heaven forbid (that shouldn't happen), but I can't parse the rest of the clue.
Many thanks...
10a block of firm, rolled lead encasing deuterium (7)
O-C-U-E
This looks like OCCLUDE (to block) but I can't parse the rest of the clue.
Many thanks...
13d I understand song and dance, maybe, over street planner (10)
-T-A-----T
This looks like STRATEGIST but I can't parse the whole clue.
Many thanks...