BOGOTA, Aug 14 (Reuters) - Colombia's Grupo Argos

reported a 40% drop in its second quarter net income,

compared to the same period last year, falling to 189 billion

Colombian pesos ($47 million), the conglomerate said on

Wednesday.

In a presentation, Argos, with units in the energy, cement

and airport operation sectors, chalked up the quarterly hit to

its income as mainly driven by a 90% fall in proceeds from

concessions and nearly a quarter less income from its cement

business.

The company's revenues in the April-to-June period slipped

17% to 3.7 trillion pesos.

The drop in revenue was led by an 88% slide from what

the company described as reclassifications and other business

units, according to the presentation.

Earnings before interest, taxes, depreciation and

amortization (EBITDA) decreased by 13% year-on-year to 993

billion pesos.

($1 = 4,013.8200 Colombian pesos)