What does Job Chapter 28 say, and which statements belong to its speaker?

Job describes veins of silver, places where gold is melted, iron taken from earth and stone heated into brass. He speaks of setting a time for darkness and considering the end, dark stone and the shadow of death. The difficult wording says a flood divides from people on their journey, forgotten by the needy and those unable to reach it; it does not expressly describe mining shafts or a highway. Land that yields bread is overturned with fire, with sapphire stones and clods of gold. A bird and vulture do not know the path; children of merchants and the lioness do not tread it. Hands reach flint, overturn mountain roots, cut rivers in rocks, search precious things and bring concealed things to light.

Job asks where wisdom is found and understanding dwells. Its price is unknown and it is not found in the land of those living in delights; the depth and sea say it is not with them. Gold, silver, dyed colors of India, sardonyx, sapphire, crystal, vessels of gold and high things cannot be exchanged for it; Ethiopia's topaz and the cleanest dye do not match it. It is hidden from living eyes and birds; destruction and death have heard its fame.

Job says God understands its way and place, beholds the world's ends and all under heaven, weighs winds, measures waters and appoints rain and storms. He saw, declared, prepared and searched wisdom, then said to man that fear of the Lord is wisdom and departure from evil understanding. The separate heading distinguishes human industry from wisdom received from God.