THIS PROPOSAL AIMS TO DEVELOP ADDITIONAL CONSTRAINTS ON THE TIMING OF THE GIANT PLANET INSTABILITY CONDITIONS IN THE PRIMORDIAL KUIPER BELT PRIOR TO THIS AND REASSESS THE DYNAMICAL LIFETIMES OF KUIPER BELT BINARY OBJECTS. THESE GOALS WILL BE ACCOMPLISHED THROUGH THREE RESEARCH TASKS FOCUSED ON DYNAMICAL AND COLLISIONAL MODELING. FIRST WE WILL USE DYNAMICAL MODELS TO REASSESS WHETHER ULTRA-WIDE KUIPER BELT BINARIES CAN IN FACT SURVIVE FOR THE AGE OF THE SOLAR SYSTEM AND BY EXTENSION WHETHER THEIR MODERN EXISTENCE OFFERS ROBUST CONSTRAINTS ON THE EARLY SOLAR SYSTEM. SECOND WE WILL USE A COLLISIONAL AND ORBITAL SIMULATION CODE TO MODEL ACCRETION FRAGMENTATION AND THE TIME EVOLUTION OF THE OVERALL KUIPER BELT SIZE DISTRIBUTION WITHIN A MASSIVE PRIMORDIAL DISK TO DETERMINE THE TIME REQUIRED TO GENERATE THE KUIPER BELT SIZE DISTRIBUTION AND 1000+ PLUTO-SIZED OBJECTS AS A FUNCTION OF INITIAL CONDITIONS. FINALLY WE WILL STUDY HOW LONG PRIMORDIAL KBO BINARIES CAN SURVIVE WITHIN THE MASSIVE PRE-INSTABILITY KUIPER BELT AS IT GROWS AND WHETHER CONDITIONS IN THE PRIMORDIAL BELT CAN EXPLAIN THE RARITY OF EQUAL-MASS BINARIES OUTSIDE OF THE COLD CLASSICAL KUIPER BELT. THIS PROPOSED WORK WILL CLEARLY ADVANCE THE EMERGING WORLDS PROGRAM'S LARGER GOAL OF UNDERSTANDING THE FORMATION AND EARLY EVOLUTION OF THE SOLAR SYSTEM.