| 1 | Framing and finishing a wall that' s half masonry and half wood frame. | |
| 2 | In California we retrofit all of the masonry building. | |
| 3 | Back among the shelves of bottles and buckets, Michael finds a bottle of masonry cleaner. | |
| 4 | In his cell, Michael packs two toothpaste tubes, one with root control the other with the masonry cleaner. | |
| 5 | In addition, portions of the wall in Gansu were made of packed earth, which is less resilient than the brick and stone used elsewhere in much of the wall's construction. |