fumble, enforcement spot

[whitehat]

NFHS: Hey guys here is something we don't run into often but if we have a fumble beyond the LOS we bean bag that because it becomes the end of the run for enforcement. And, if we have multiple fumbles we can have multiple "end of the run" spots and therefore multiple enforecment spots. So, since we rarely see it wondering what that might actually look like on the following play: Play 2 is an extension of Play 1.

Play 1: Ball on A/30, during running play B commits FM (major). A20 fumbles at A/35. A86 recovers the fumble at A/40 and begins to run. A 86 is downed at the B/45. What are the penalty options and spot of enforcemnt for the FM?

Play 2 : Ball on A/30, during running play B committs FM (Major). A 20 fumbles at A/35. A 86 recovers fumble at A/40 and runs to B/45 where he fumbles. A 10 recovers at B/40 and is downed there . During A86's run there is a PF aganst B50. What are penalty options and enforcement spots?