Reb Chaim analyzes the protection of Tzamid Patil (anything in a sealed earthenware vessel is protected from Tumah) and explains how this protection is formulated.

Reb Chaim explains the debate between the Rambam and Raavad whether a tent blocks the Tumah from travelling outwards, and how it does so

Reb Chaim analyzes a further debate between the Rambam and Raavad about the case of the barrel, and explain that according to the Raavad, Tumah can travel even in a broken path 

Reb Chaim continues analyzing the debates between the Rambam and Raavad about Tumah under a barrel, and explains that hovering over a dead body is analogous to touching it

Reb Chaim analyzes a further debate between the Rambam and other commentators regarding the case of Tumah under a barrel, and develops an original concept that impurity can transfer from a distance 

Reb Chaim explains the differing interpretations of the Rambam and Raavad so to how to interpret the unit of Mishnas which deal with Tumah in a barrel. 

Reb Chaim explains the differing interpretations of the Rambam and Raavad to a Mishna about the sloping part of a tent, which distinguishes between the inside and outside parts of the fabric

Reb Chaim analyzes a debate between the Rambam and Raavad and shows a fundamental distinction between how they view Tumah Retzuzah - when a dead body is in a constricted space, not a room (Ohel).  

Reb Chaim analyzes the case where someone travels outside Israel in a box and the Rambam's approach to interpreting this halacha

Reb Chaim analyzes the nature of the impurity that imparts through entering the airspace outside of Israel