Secondary Activities: Manufacturing, Industrial Location and Classification

What Secondary Activity Means, and Where It Locates

What Counts as a Secondary Activity

• Secondary activities add value by transforming raw materials into finished goods. Cotton becomes yarn, iron ore becomes steel, and each transformation makes the material more valuable.
• Manufacturing once meant making by hand, but now covers machine production too. Industry is a broad term. Secondary activities include manufacturing and construction, while tourism and entertainment are generally classified as service-sector activities.
• Large-scale manufacturing runs on complex machine technology, deep specialisation of labour, heavy capital, and large organisations.
• Modern manufacturing packs into under 10% of the world’s land area. A single industrial zone can employ far more people than an equivalent area of farmland.

Where Industries Locate: The Real Factors

• A market needs both demand and purchasing power. This is why wealthy regions like Europe, North America and Japan draw industries, alongside densely populated South and Southeast Asia, the same demand base covered in our World Population article.
• Industries using cheap, bulky, weight-losing material, like steel or sugar, locate close to that material’s source. Perishable inputs, like milk or farm produce, work the same way.
• Skilled labour still matters for some industries, though automation has reduced this. Power-hungry industries, like aluminium smelting, locate near the energy sources covered in our power resources article, and efficient transport keeps raw-material and finished-goods costs down.
• Governments steer industries toward specific regions through regional policy. Separately, firms cluster near each other to share suppliers and infrastructure, a benefit called agglomeration economies.

Footloose Industries and Location Theory

• A footloose industry is not tied to any single raw material or location factor. It builds from component parts that can be sourced almost anywhere.
• These are typically small-scale, low-pollution operations with a small workforce. Diamond processing, pharmaceuticals and electronics assembly are real examples. Since they are not tied to materials, road access becomes the deciding factor in where one actually sets up.
• Alfred Weber’s influential least-cost theory explains industrial location around minimising transport cost, treated as a function of weight and distance.
• An isodapane, a term from that same theory, is a line connecting points of equal additional transport cost around an ideal least-cost site.

Classifying Industries by Size, Input and Ownership

Classifying Industries: Size and Raw Material

• Industries scale from household or cottage manufacturing, to small-scale, to large-scale, based on capital invested, workers employed, and output volume.
• Industries also split by their main input: agro-based (sugar, textiles), mineral-based (iron and steel), chemical-based (plastics, fertilisers), forest-based (timber, paper), and animal-based (leather, wool).
• Mineral-based industries split further. Ferrous industries centre on iron and steel, built from minerals like iron ore, manganese and chromite, while non-ferrous ones handle metals like copper, aluminium and tungsten instead.

Ownership and the Smallest Scale: Household Industries

• State-owned industries, like Bharat Heavy Electricals Limited and many basic iron and steel plants, sit in the public sector, run by the government.
• Privately owned industries, like textile and consumer-goods makers, run for their owners’ profit in the private sector. Some industries, like vehicle manufacturing, combine both government and private capital in a joint sector enterprise.
• Household or cottage industries are run by artisans at home, using local raw materials and simple tools, often with family or part-time labour. Pottery making in Nagaland and bamboo-basket weaving in Arunachal Pradesh are textbook examples, with goods sold in village markets or bartered.
• These goods rarely travel far. Capital and transport barely matter here, unlike every other scale of manufacturing above it, an industrial geography this site covers for India in our industrial regions article.