1 Yellow Quartz - Inside a toppled milk urn underneath the house. The door of the outhouse in this area has a yellow arrow painted on it that points to its location.
Large Power Regulator Room - Heisenberg's Factory MB4
1 Yellow Quartz - High up on the wall on the south side of the lower level. It is in the corner opposite the foot of the stairs leading up to the upper level.
1 Yellow Quartz - On the underside of the pipe above the southern door leading to the 'L' Passage. You need to restore power and push the button to lower the platform to access it.
1 Yellow Quartz - On the wall of the west upper platform. This platform is accessible by taking the zip-line from the north west area on the B1 Walkway.