624 So.2d 1224 (1993)
Albert Lee SPELL, et al.
No. 93-C-1508.
Albert Lee SPELL, et al.
v.
NL INDUSTRIES, INC. et al.
No. 93-C-1508.
Supreme Court of Louisiana.
September 24, 1993.*1225 Denied.
MARCUS, J., not on panel.