The following code
ContourPlot[Min[(-7 + 100 t - x) (5 + 100 t - x), (400 t^2 + 40 t (-5 + x) + (-5 + x) (7 + x))], {t, 0, .05}, {x, -1, 5}, PlotRange -> All] gives an ugly picture:

Why does it not plot the entire data?
Checking with excel gives the following

Pardon me if this is already addressed. I looked but did not find any relevant answer other than PlotRange->All

