| MANUFACTURE OF PLATE GLASS AND MIRRORS |
|
Pittsburgh plate glass |
15 min |
16mm |
|
Sound |
| MANUFACTURE OF PENNVERNON WINDOW GLASS |
|
Pittsburgh plate glass |
8 min |
16mm |
|
Sound |
| MANUFACTURE OF P C GLASS BLOCKS |
|
Pittsburgh plate glass |
8 min |
16mm |
|
Sound |
| MANUFACTURE OF LAMINATED GLASS |
|
Pittsburgh plate glass |
8 min |
16mm |
|
Sound |