37 



J „ In 1900, during the development in East Kootenay, 



Lead and Zinc , . . „ , , , . . 



Feel War Effect lead production in Canada reached its maximum, 



63,169,821 lbs. It declined to 18,139,283 lbs. in 



1903, increased to 56,864,915 lbs. in 1905, and fell to 23,784,969 lbs. 



in 1911. Owing to demands for war purposes, production in 1915 



increased to 46,316,450 lbs. In 1918 it was 43,846,260 lbs., valued 



at $4,055,779. 



The total production of zinc during 1918 was 16,832 tons 

 (33,663,690 lbs.), valued at $2,746,620, as compared with 14,834 tons, 

 valued at $2,640,817, in 1917, and 4,551 tons (9,101,460 lbs.), valued 

 at $474,459, in 1914. 



The production of steel ingots and direct steel castings during 



1918, was 1,893,000 short tons, as compared with 1,745,734 tons 



in 1917, and 823,641 tons in 1914. 



During 1918, magnesite from the Grenville district. 

 Advances in Use r\ u -i ui r e r i* • 



of Magnesite UuG-' became available tor use for furnace linings, 

 thus replacing the mineral heretofore imported 

 from Austria and Greece. It had been assumed that, owing to the 

 high lime content of the Grenville mineral, it could not be used, 

 but the exigencies of war conditions induced experimental work, 

 which demonstrated that, when properly treated, it makes a rammed 

 or burnt-in lining comparable with the best Austrian. The total 

 shipments of magnesite in 1918 aggregated 39,365 tons, valued at 

 $1,016,765, as compared with 58,090 tons, valued at $728,275, in 

 1917, and 358 tons, valued at $2,240, in 1914. 



One of the most important metallurgical advances 

 Ferro-Alloys '^ ^^^ development of the manufacture of the ferro- 



alloys, particularly ferro-silicon. The Electro Metals, 

 Ltd., of Welland, Ont., is the largest electric ferro-alloy industry in 

 the British Empire. This plant has a capacity of 48,000 tons of 50 

 per cent ferro-silicon, and of 25,000 tons per annum of carbon- 

 electrodes. In addition to its use in steel manufacture, ferro-silicon, 

 with 85 per cent silicon content, was in demand for use in the manu- 

 facture of balloon gas. 



The war has demonstrated the enormous value 

 its Products ^^ petrc^eum and its products, particularly gaso- 



lene. In the pre-war period, large reserve stocks 

 of i)ctroleum were carried in the United States, but the enor- 

 mously increased demand, coupled with declining production, 

 reduced the amount on hand January 1, 1918, to about 153,000,000 

 bbls., although a storage of about 50,000,000 bbls. is required to fill 

 the pipe lines and keep the industry in operation. At the same 

 time, if consumption of petroleum in the United States were to 



