in the manufacture of glass melting pots of all kinds, during 
which it has established an enviable reputation as producers 
of the highest grade glass melting pots and glass furnace 
refractories in general. The foundation of good pot making 
is the nature of the clay used, quality being the one prin- 
ciple which guides this company in the selection of clays. 
Keeping in constant touch with sources of supply, and by 
frequent careful tests, the company is assured that its pro- 
ducts are fully up to the standards its officials have set. 
After receiving the raw clays from the mines, these clays 
are all thoroughly inspected and picked by hand. All 
doubtful or inferior clays are immediately rejected, and 
extreme care is used to see that only the very best of ma- 
terial enters into the composition of the pot. The com- 
pany has facilities for burning such clays as are used in the 
batch in the burned condition, and these clays are all in- 
spected again after burning, 
The next process consists of grinding and screening the 
various clays which enter into the pot mixture. It is 
highly important that the various clays be screened to the 
size that will give the best results in.the finished pot, and 
this detail is looked after with the closest attention. The 
various clays are intimately mixed in the proper propor- 
tions, and then passed through “pug mills,” in order that 
the batch may be thoroughly amalgamated. After this mix- 
ing and pugging process is completely accomplished, the 
batch is stored in bins to age or ripen. The proper aging 
of pot and tank block clays is of great importance, and the 
company has bins capable of holding a year’s supply of 
clay, in order that the aging may be properly accomplished. 
During the aging process the batch is transferred from one 
bin to another, being again thoroughly pugged at each 
transfer 
Pot clay usually requires from eight months to one year 
to age, in order to make it a homogeneous mass. After 
the clay is properly aged it is again pugged and transferred 
to the trampers’ box, where it is kneaded by the bare feet 
of the clay trampers. It is then made into small rolls 
suited to fit the hand of the pot maker.