2. Relation of iron mines to coal mines.

3. Location of Pittsburg—

(a) in coal region.

(b) at junction of rivers which form the Ohio River.

Presentation:—

(Following closely McMurry’s Special Method in Geography.)

1. Advantages of Pittsburg for iron and steel manufacturing. Illustrate with sand map.

(a) Coal region—rivers bring coal to Pittsburg.

(b) Iron region near.