Show straub mg coo co take pleasure in announcing the opening of the most complete pacific coast assay and ore testing plant fully equipped to handle all work under actual field conditions experienced metallurgists in charge flow sheets mill design 11 mine examinations and management ACCURACY ASSURED CHAS P RICHMOND J R KUENEMAN W B STRAUB chief metallurgist general manager president utah fire clay coo co SALT LAKE CITY UTAH manufacturers of high grade crucibles Cruci bles silica brick fire brick sewer pipe drain tile partition tile flower pots wall coping flue lining fire clay face brick fire tile WRITE FOR PRICES g microscopic thin sections made from your materials at per slide we make slides of rocks mineral ores cements bricks clays powders mineral crystals drill hole cores and other WRITE substances of this nature to thickness from to 10 mm WESTERN laboratory east loth st los angeles calif 11 |