صور الصفحة
PDF
النشر الإلكتروني
[merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][graphic][subsumed][subsumed][subsumed][subsumed][merged small][merged small][merged small][merged small]

TN
23

4581b

The Bureau of Mines, in carrying out one of the provisions of its organic act-to disseminate information concerning investigations made-prints a limited free edition of each of its publications.

When this edition is exhausted copies may be obtained at cost price only through the Superintendent of Documents, Government Printing Office, Washington, D. C., who is the authorized agent of the Federal Government for the sale of all publications.

The Superintendent of Documents is not an official of the Bureau of Mines. His is an entirely separate office and he should be addressed: SUPERINTENDENT OF DOCUMENTS,

Government Printing Office,

Washington, D. C.

The general law under which publications are distributed prohibits the giving of more than one copy of a publication to one person. Additional copies must be purchased from the Superintendent of Documents. The cost of this Bulletin is 20 cents.

First edition. February, 1914.

CONTENTS.

PART I.-THE ELECTRIC FURNACE IN PIG-IRON MANUFACTURE.

Objections__.

[blocks in formation]
[merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][subsumed][merged small][subsumed]

PART I.-THE ELECTRIC FURNACE IN PIG-IRON MANUFACTURE-Contd.

An estimate for the erection of an electric iron-smelting and steel-refining

PART II. THE ELECTRIC FURNACE IN STEEL MANUFACTURE.

[ocr errors][merged small][merged small][merged small][merged small][merged small]

77

77

79

« السابقةمتابعة »