The copper era and Morenci leader., 1913-05-02
EXPOSITION NOTES.
Panama-Pacific International Ex- position.

Municipal Auditorium which is to be built in the Civic Center of San Fran cisco have been called for by the Panama-Pacific International Exposi- ton. One million dollars was set aside by the exposition directors for this immense structure, and the city and county paid $701,437OS for the site which was formally occupied by the old Mechanics Pavilion. The plans for the steel work have been completed by the consulting archi- tects, John Galen Howard, Fred Mey- CTS and John Reid, Jr. Work on the building will be rushed as more than one hundred congresses and conven- position year.
 Contracts for the construction of the Machinery Palace, Food Products, Agricultural and Educational Palaces have been let by the Exposition and within another thirty days contract ors will be at work on these exhibit buildings. This means the employ ment of three to five thousand men by the contractors By August next it is expected that at least 1000 men will be at work on the grounds. At present 200O head of stock are busily engaged in the pre-exposition work.
 Residents of this city and vicinity are earnestly requested when pur chasing postage stamps to ask the clerk for the exposition stamps. This request is made by the Division of Exploitation of the Panama-Pacific In- ternational Exposition in order that the 1915 Worlds Fair may be ex- plotted throughout the world. The government is still printing the old style stamp and these are offered to the buyer because they are easier to of San Francisco a few weeks ago ordered ten million two cent stamps of the Panama issue. These stamps are in commemoration of the Panama Canal and the celebration which is to be held here in 1915.
 Electricians are now planning for the construction of the largest search light in the world which the Mount Tamalpais railroad intends to-install on top of Mount Tamapais as an added exposition feature. It is hoped that the rays of the powerful light will reach across the Golden Gate and tip the mountain tops for miles around and that they will also illum- mate the 1915 exposition grounds. There is doubt among experts as to whether rays of light can be made to illuminate the exposition site, Some claim that on clear nights this can be done, but test will have to be made before the question is settled. A local firm of electrical engineers are at present making searchlight fitted with a parabolic Bausch and Lomb mirror Tense and an arc lamp capable of one hundred and twenty Samperes of current capacity, to be increased as desired. The lens is so constructed as to concentrate the intense light on 100 foot square spot at a dis tance of nine miles from the lense. Thrown into the sky a beam from this lamp will be seen at 100 miles distance, and objects will be illum- mated at a distance of ten to twenty 1AllSo 1hO oOd1 C1ll6hI WAAA ho'O h range of at least twelve miles and will be sufficient to blind a man at this distance.
 Hundreds of visitors journey to the Panama-Pacic International Exposi- tion site daily to watch the progress on the Palace of Machinery and other activities The construction of the Ervbibit DoIooo iC Ont only remarkable but unique. From points of eminence for miles around the great brown framework, surrounded by millions of feet of lumber awaiting it's placement may be seen. At closer view, the gigantic structure looks alive On work days it is dotted with tiny forms of men. Three hundred and seventy men are at work on the building which is being con- structed with surprising rapidity- In the center of the columns are chords for single beams of great thickness. The chords are one hundred and ten feet high. To the summit of them are attached the arches, also fitted to- gether on the ground and hoisted in structural completeness to their lofty eninence. They are received at the top by scores of men who immediate ly rivet them to the chords and then connect the whole to the next column by stanchions twenty-five feet 1n length Machinery Hall is being built in three naves. This means four lines of columns running the legth of the building.