



APPENDIX B. 



IS 





Kettle Salt. 



Pan Salt. 



Steam Salt. 



Solar Salt 



1869.. 



..335,663 bbls. 



42,000 bbls. 



176,761 bbls. 



15,264 bb 



i87o.. 



..301,900 " 



56,430 " 



255,142 " 



15,507 " 



1871.. 



..290,550 " 



68,080 '' 



336,162 " 



37,645 " 



1872.. 



..202,300 " 



65,800 " 



435,920 " 



20,461 " 



1873.. 



..192,250 " 



127,700 "■ 



471,128 " 



32,267 " 



1874.. 



..181,200 " 



130,500 " 



685,888 " 



29,391 " 



1875 — 117,000 " 199,100 " 741,429 " 24,336 



FUEL. 



The fuel used in kettle blocks is cord wood, mixed soft and hard, 

 refuse slabs, and sawdust from saw-mills. Mixed wood now costs 

 $1.25 per cord, delivered at block. Slabs cost 45 to 50 cents per 

 cord at the mills. 



A kettle block will consume 10 cords of mixed wood in 24 hours, 

 or 16 cords of slabs in the same time. 



Pan blocks on the Saginaw River are run almost entirely with 

 slabs and sawdust from the saw-mills. On the lake shore, mixed 

 cord wood is the fuel used. A pan block 90 feet long, and 16 feet 

 wide, as above described, will use 13 cords of mixed wood in 24 hours, 

 making 140 barrels of fine salt. 



Steam blocks are mostly heated during the day with the exhaust 

 from the saw-mills. This is the steam that has been made in the 

 mill boilers. Having performed the work of running the mill 

 engines, it is then exhausted into the pipes connected with the salt 

 block, which carry it through the settlers and graining vats, and 

 causes the evaporation of the brine. If the mill does not run at 

 night, the boilers are connected directly with the steam pipes in the 

 salt block, and live steam is used, the fuel being the sawdust left 

 from running the mill in the day-time. 



BARRELS, MATERIAL, AND COST. 



The salt barrels of Michigan are now mostly made of pine staves 

 and heading. In some localities, elm staves and ash heading are 

 used. Most of the pine staves are made of the refuse lumber 

 from the saw-mills. The elm stave is mostly made from stave bolts 

 cut for that purpose. 



