1976 Photomicrography Competition
![Small World](/images/SW50-logo.png)
![](https://www.nikonsmallworld.com/images/photos/1976/_photo800/1976_16.jpg)
16th Place
Alumina-chromic oxide refractory brick
J. R. McCombs D. V. Stiles
- Affiliation
- Harbison-Walker Refractories
Pittsburgh, Pennsylvania, USA
- Technique
- Polarized Light
- Magnifaction
- 30
16th Place
Alumina-chromic oxide refractory brick